2020 ICD-10-CM Diagnosis Code G55

Nerve root and plexus compressions in diseases classified elsewhere

    2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
  • G55 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Nerve root and plexus compressions in diseases classd elswhr
  • The 2020 edition of ICD-10-CM G55 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G55 - other international versions of ICD-10 G55 may differ.
ICD-10-CM Coding Rules
  • G55 describes the manifestation of an underlying disease, not the disease itself.
Code First
Code First Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
  • underlying disease, such as:
  • neoplasm (C00-D49
    ICD-10-CM Range C00-D49

    Neoplasms

    • C00-C14 Malignant neoplasms of lip, oral cavity ...
    • C15-C26 Malignant neoplasms of digestive organs
    • C30-C39 Malignant neoplasms of respiratory and i...
    • C40-C41 Malignant neoplasms of bone and articula...
    • C43-C44 Melanoma and other malignant neoplasms o...
    • C45-C49 Malignant neoplasms of mesothelial and s...
    • C50-C50 Malignant neoplasms of breast
    • C51-C58 Malignant neoplasms of female genital or...
    • C60-C63 Malignant neoplasms of male genital orga...
    • C64-C68 Malignant neoplasms of urinary tract
    • C69-C72 Malignant neoplasms of eye, brain and ot...
    • C73-C75 Malignant neoplasms of thyroid and other...
    • C76-C80 Malignant neoplasms of ill-defined, othe...
    • C7A-C7A Malignant neuroendocrine tumors
    • C7B-C7B Secondary neuroendocrine tumors
    • C81-C96 Malignant neoplasms of lymphoid, hematop...
    • D00-D09 In situ neoplasms
    • D10-D36 Benign neoplasms, except benign neuroend...
    • D37-D48 Neoplasms of uncertain behavior, polycyt...
    • D3A-D3A Benign neuroendocrine tumors
    • D49-D49 Neoplasms of unspecified behavior
    )
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as G55. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • nerve root compression (due to) (in) ankylosing spondylitis (
    ICD-10-CM Diagnosis Code M45
    • M45 Ankylosing spondylitis
      • M45.0 Ankylosing spondylitis of multiple sites in s...
      • M45.1 Ankylosing spondylitis of occipito-atlanto-ax...
      • M45.2 Ankylosing spondylitis of cervical region
      • M45.3 Ankylosing spondylitis of cervicothoracic reg...
      • M45.4 Ankylosing spondylitis of thoracic region
      • M45.5 Ankylosing spondylitis of thoracolumbar regio...
      • M45.6 Ankylosing spondylitis lumbar region
      • M45.7 Ankylosing spondylitis of lumbosacral region
      • M45.8 Ankylosing spondylitis sacral and sacrococcyg...
      • M45.9 Ankylosing spondylitis of unspecified sites i...
    M45.-
    )
  • nerve root compression (due to) (in) dorsopathies (
    ICD-10-CM Diagnosis Code M53
    • M53 Other and unspecified dorsopathies, not elsew...
      • M53.0 Cervicocranial syndrome
      • M53.1 Cervicobrachial syndrome
      • M53.2 Spinal instabilities
        • M53.2X Spinal instabilities
          • M53.2X1 Spinal instabilities, occipito-atlanto-axial ...
          • M53.2X2 …… cervical region
          • M53.2X3 …… cervicothoracic region
          • M53.2X4 …… thoracic region
          • M53.2X5 …… thoracolumbar region
          • M53.2X6 …… lumbar region
          • M53.2X7 …… lumbosacral region
          • M53.2X8 Spinal instabilities, sacral and sacrococcyge...
          • M53.2X9 …… site unspecified
      • M53.3 Sacrococcygeal disorders, not elsewhere class...
      • M53.8 Other specified dorsopathies
        • M53.80 Other specified dorsopathies, site unspecifie...
        • M53.81 Other specified dorsopathies, occipito-atlant...
        • M53.82 Other specified dorsopathies, cervical region...
        • M53.83 Other specified dorsopathies, cervicothoracic...
        • M53.84 Other specified dorsopathies, thoracic region...
        • M53.85 Other specified dorsopathies, thoracolumbar r...
        • M53.86 …… lumbar region
        • M53.87 Other specified dorsopathies, lumbosacral reg...
        • M53.88 Other specified dorsopathies, sacral and sacr...
      • M53.9 Dorsopathy, unspecified
    M53.-
    ,
    ICD-10-CM Diagnosis Code M54
    • M54 Dorsalgia
      • M54.0 Panniculitis affecting regions of neck and ba...
        • M54.00 Panniculitis affecting regions of neck and ba...
        • M54.01 Panniculitis affecting regions of neck and ba...
        • M54.02 Panniculitis affecting regions of neck and ba...
        • M54.03 Panniculitis affecting regions of neck and ba...
        • M54.04 Panniculitis affecting regions of neck and ba...
        • M54.05 Panniculitis affecting regions of neck and ba...
        • M54.06 Panniculitis affecting regions of neck and ba...
        • M54.07 Panniculitis affecting regions of neck and ba...
        • M54.08 Panniculitis affecting regions of neck and ba...
        • M54.09 Panniculitis affecting regions, neck and back...
      • M54.1 Radiculopathy
        • M54.10 …… site unspecified
        • M54.11 …… occipito-atlanto-axial region
        • M54.12 …… cervical region
        • M54.13 …… cervicothoracic region
        • M54.14 …… thoracic region
        • M54.15 …… thoracolumbar region
        • M54.16 …… lumbar region
        • M54.17 …… lumbosacral region
        • M54.18 Radiculopathy, sacral and sacrococcygeal regi...
      • M54.2 Cervicalgia
      • M54.3 Sciatica
      • M54.4 Lumbago with sciatica
      • M54.5 Low back pain
      • M54.6 Pain in thoracic spine
      • M54.8 Other dorsalgia
      • M54.9 Dorsalgia, unspecified
    M54.-
    )
  • nerve root compression (due to) (in) intervertebral disc disorders (
    ICD-10-CM Diagnosis Code M50.1

    Cervical disc disorder with radiculopathy

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • brachial radiculitis NOS (M54.13)
    M50.1.-
    ,
    ICD-10-CM Diagnosis Code M51.1

    Thoracic, thoracolumbar and lumbosacral intervertebral disc disorders with radiculopathy

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Sciatica due to intervertebral disc disorder
    Type 1 Excludes
    M51.1.-
    )
  • nerve root compression (due to) (in) spondylopathies (
    ICD-10-CM Diagnosis Code M46
    • M46 Other inflammatory spondylopathies
      • M46.0 Spinal enthesopathy
        • M46.00 …… site unspecified
        • M46.01 Spinal enthesopathy, occipito-atlanto-axial r...
        • M46.02 …… cervical region
        • M46.03 …… cervicothoracic region
        • M46.04 …… thoracic region
        • M46.05 …… thoracolumbar region
        • M46.06 …… lumbar region
        • M46.07 …… lumbosacral region
        • M46.08 Spinal enthesopathy, sacral and sacrococcygea...
        • M46.09 …… multiple sites in spine
      • M46.1 Sacroiliitis, not elsewhere classified
      • M46.2 Osteomyelitis of vertebra
        • M46.20 …… site unspecified
        • M46.21 Osteomyelitis of vertebra, occipito-atlanto-a...
        • M46.22 …… cervical region
        • M46.23 Osteomyelitis of vertebra, cervicothoracic re...
        • M46.24 …… thoracic region
        • M46.25 Osteomyelitis of vertebra, thoracolumbar regi...
        • M46.26 …… lumbar region
        • M46.27 Osteomyelitis of vertebra, lumbosacral region...
        • M46.28 Osteomyelitis of vertebra, sacral and sacroco...
      • M46.3 Infection of intervertebral disc (pyogenic)
        • M46.30 Infection of intervertebral disc (pyogenic), ...
        • M46.31 Infection of intervertebral disc (pyogenic), ...
        • M46.32 Infection of intervertebral disc (pyogenic), ...
        • M46.33 Infection of intervertebral disc (pyogenic), ...
        • M46.34 Infection of intervertebral disc (pyogenic), ...
        • M46.35 Infection of intervertebral disc (pyogenic), ...
        • M46.36 Infection of intervertebral disc (pyogenic), ...
        • M46.37 Infection of intervertebral disc (pyogenic), ...
        • M46.38 Infection of intervertebral disc (pyogenic), ...
        • M46.39 Infection of intervertebral disc (pyogenic), ...
      • M46.4 Discitis, unspecified
        • M46.40 …… site unspecified
        • M46.41 Discitis, unspecified, occipito-atlanto-axial...
        • M46.42 …… cervical region
        • M46.43 Discitis, unspecified, cervicothoracic region...
        • M46.44 …… thoracic region
        • M46.45 …… thoracolumbar region
        • M46.46 …… lumbar region
        • M46.47 …… lumbosacral region
        • M46.48 Discitis, unspecified, sacral and sacrococcyg...
        • M46.49 Discitis, unspecified, multiple sites in spin...
      • M46.5 Other infective spondylopathies
        • M46.50 Other infective spondylopathies, site unspeci...
        • M46.51 Other infective spondylopathies, occipito-atl...
        • M46.52 Other infective spondylopathies, cervical reg...
        • M46.53 Other infective spondylopathies, cervicothora...
        • M46.54 Other infective spondylopathies, thoracic reg...
        • M46.55 Other infective spondylopathies, thoracolumba...
        • M46.56 Other infective spondylopathies, lumbar regio...
        • M46.57 Other infective spondylopathies, lumbosacral ...
        • M46.58 Other infective spondylopathies, sacral and s...
        • M46.59 Other infective spondylopathies, multiple sit...
      • M46.8 Other specified inflammatory spondylopathies
        • M46.80 Other specified inflammatory spondylopathies,...
        • M46.81 Other specified inflammatory spondylopathies,...
        • M46.82 Other specified inflammatory spondylopathies,...
        • M46.83 Other specified inflammatory spondylopathies,...
        • M46.84 Other specified inflammatory spondylopathies,...
        • M46.85 Other specified inflammatory spondylopathies,...
        • M46.86 Other specified inflammatory spondylopathies,...
        • M46.87 Other specified inflammatory spondylopathies,...
        • M46.88 Other specified inflammatory spondylopathies,...
        • M46.89 Other specified inflammatory spondylopathies,...
      • M46.9 Unspecified inflammatory spondylopathy
        • M46.90 Unspecified inflammatory spondylopathy, site ...
        • M46.91 Unspecified inflammatory spondylopathy, occip...
        • M46.92 Unspecified inflammatory spondylopathy, cervi...
        • M46.93 Unspecified inflammatory spondylopathy, cervi...
        • M46.94 Unspecified inflammatory spondylopathy, thora...
        • M46.95 Unspecified inflammatory spondylopathy, thora...
        • M46.96 Unspecified inflammatory spondylopathy, lumba...
        • M46.97 Unspecified inflammatory spondylopathy, lumbo...
        • M46.98 Unspecified inflammatory spondylopathy, sacra...
        • M46.99 Unspecified inflammatory spondylopathy, multi...
    M46.-
    ,
    ICD-10-CM Diagnosis Code M48
    • M48 Other spondylopathies
      • M48.0 Spinal stenosis
        • M48.00 …… site unspecified
        • M48.01 Spinal stenosis, occipito-atlanto-axial regio...
        • M48.02 …… cervical region
        • M48.03 …… cervicothoracic region
        • M48.04 …… thoracic region
        • M48.05 …… thoracolumbar region
        • M48.06 Spinal stenosis, lumbar region
          • M48.061 Spinal stenosis, lumbar region without neurog...
          • M48.062 Spinal stenosis, lumbar region with neurogeni...
        • M48.07 …… lumbosacral region
        • M48.08 Spinal stenosis, sacral and sacrococcygeal re...
      • M48.1 Ankylosing hyperostosis [Forestier]
        • M48.10 Ankylosing hyperostosis [Forestier], site uns...
        • M48.11 Ankylosing hyperostosis [Forestier], occipito...
        • M48.12 Ankylosing hyperostosis [Forestier], cervical...
        • M48.13 Ankylosing hyperostosis [Forestier], cervicot...
        • M48.14 Ankylosing hyperostosis [Forestier], thoracic...
        • M48.15 Ankylosing hyperostosis [Forestier], thoracol...
        • M48.16 Ankylosing hyperostosis [Forestier], lumbar r...
        • M48.17 Ankylosing hyperostosis [Forestier], lumbosac...
        • M48.18 Ankylosing hyperostosis [Forestier], sacral a...
        • M48.19 Ankylosing hyperostosis [Forestier], multiple...
      • M48.2 Kissing spine
        • M48.20 …… site unspecified
        • M48.21 …… occipito-atlanto-axial region
        • M48.22 …… cervical region
        • M48.23 …… cervicothoracic region
        • M48.24 …… thoracic region
        • M48.25 …… thoracolumbar region
        • M48.26 …… lumbar region
        • M48.27 …… lumbosacral region
      • M48.3 Traumatic spondylopathy
        • M48.30 …… site unspecified
        • M48.31 Traumatic spondylopathy, occipito-atlanto-axi...
        • M48.32 …… cervical region
        • M48.33 Traumatic spondylopathy, cervicothoracic regi...
        • M48.34 …… thoracic region
        • M48.35 Traumatic spondylopathy, thoracolumbar region...
        • M48.36 …… lumbar region
        • M48.37 …… lumbosacral region
        • M48.38 Traumatic spondylopathy, sacral and sacrococc...
      • M48.4 Fatigue fracture of vertebra
        • M48.40 Fatigue fracture of vertebra, site unspecifie...
          • M48.40XA Fatigue fracture of vertebra, site unspecifie...
          • M48.40XD Fatigue fracture of vertebra, site unspecifie...
          • M48.40XG Fatigue fracture of vertebra, site unspecifie...
          • M48.40XS Fatigue fracture of vertebra, site unspecifie...
        • M48.41 Fatigue fracture of vertebra, occipito-atlant...
          • M48.41XA Fatigue fracture of vertebra, occipito-atlant...
          • M48.41XD Fatigue fracture of vertebra, occipito-atlant...
          • M48.41XG Fatigue fracture of vertebra, occipito-atlant...
          • M48.41XS Fatigue fracture of vertebra, occipito-atlant...
        • M48.42 Fatigue fracture of vertebra, cervical region...
          • M48.42XA Fatigue fracture of vertebra, cervical region...
          • M48.42XD Fatigue fracture of vertebra, cervical region...
          • M48.42XG Fatigue fracture of vertebra, cervical region...
          • M48.42XS Fatigue fracture of vertebra, cervical region...
        • M48.43 Fatigue fracture of vertebra, cervicothoracic...
          • M48.43XA Fatigue fracture of vertebra, cervicothoracic...
          • M48.43XD Fatigue fracture of vertebra, cervicothoracic...
          • M48.43XG Fatigue fracture of vertebra, cervicothoracic...
          • M48.43XS Fatigue fracture of vertebra, cervicothoracic...
        • M48.44 Fatigue fracture of vertebra, thoracic region...
          • M48.44XA Fatigue fracture of vertebra, thoracic region...
          • M48.44XD Fatigue fracture of vertebra, thoracic region...
          • M48.44XG Fatigue fracture of vertebra, thoracic region...
          • M48.44XS Fatigue fracture of vertebra, thoracic region...
        • M48.45 Fatigue fracture of vertebra, thoracolumbar r...
          • M48.45XA Fatigue fracture of vertebra, thoracolumbar r...
          • M48.45XD Fatigue fracture of vertebra, thoracolumbar r...
          • M48.45XG Fatigue fracture of vertebra, thoracolumbar r...
          • M48.45XS Fatigue fracture of vertebra, thoracolumbar r...
        • M48.46 Fatigue fracture of vertebra, lumbar region
          • M48.46XA Fatigue fracture of vertebra, lumbar region, ...
          • M48.46XD Fatigue fracture of vertebra, lumbar region, ...
          • M48.46XG Fatigue fracture of vertebra, lumbar region, ...
          • M48.46XS Fatigue fracture of vertebra, lumbar region, ...
        • M48.47 Fatigue fracture of vertebra, lumbosacral reg...
          • M48.47XA Fatigue fracture of vertebra, lumbosacral reg...
          • M48.47XD Fatigue fracture of vertebra, lumbosacral reg...
          • M48.47XG Fatigue fracture of vertebra, lumbosacral reg...
          • M48.47XS Fatigue fracture of vertebra, lumbosacral reg...
        • M48.48 Fatigue fracture of vertebra, sacral and sacr...
          • M48.48XA Fatigue fracture of vertebra, sacral and sacr...
          • M48.48XD Fatigue fracture of vertebra, sacral and sacr...
          • M48.48XG Fatigue fracture of vertebra, sacral and sacr...
          • M48.48XS Fatigue fracture of vertebra, sacral and sacr...
      • M48.5 Collapsed vertebra, not elsewhere classified
        • M48.50 Collapsed vertebra, not elsewhere classified,...
          • M48.50XA Collapsed vertebra, not elsewhere classified,...
          • M48.50XD Collapsed vertebra, not elsewhere classified,...
          • M48.50XG Collapsed vertebra, not elsewhere classified,...
          • M48.50XS Collapsed vertebra, not elsewhere classified,...
        • M48.51 Collapsed vertebra, not elsewhere classified,...
          • M48.51XA Collapsed vertebra, not elsewhere classified,...
          • M48.51XD Collapsed vertebra, not elsewhere classified,...
          • M48.51XG Collapsed vertebra, not elsewhere classified,...
          • M48.51XS Collapsed vertebra, not elsewhere classified,...
        • M48.52 Collapsed vertebra, not elsewhere classified,...
          • M48.52XA Collapsed vertebra, not elsewhere classified,...
          • M48.52XD Collapsed vertebra, not elsewhere classified,...
          • M48.52XG Collapsed vertebra, not elsewhere classified,...
          • M48.52XS Collapsed vertebra, not elsewhere classified,...
        • M48.53 Collapsed vertebra, not elsewhere classified,...
          • M48.53XA Collapsed vertebra, not elsewhere classified,...
          • M48.53XD Collapsed vertebra, not elsewhere classified,...
          • M48.53XG Collapsed vertebra, not elsewhere classified,...
          • M48.53XS Collapsed vertebra, not elsewhere classified,...
        • M48.54 Collapsed vertebra, not elsewhere classified,...
          • M48.54XA Collapsed vertebra, not elsewhere classified,...
          • M48.54XD Collapsed vertebra, not elsewhere classified,...
          • M48.54XG Collapsed vertebra, not elsewhere classified,...
          • M48.54XS Collapsed vertebra, not elsewhere classified,...
        • M48.55 Collapsed vertebra, not elsewhere classified,...
          • M48.55XA Collapsed vertebra, not elsewhere classified,...
          • M48.55XD Collapsed vertebra, not elsewhere classified,...
          • M48.55XG Collapsed vertebra, not elsewhere classified,...
          • M48.55XS Collapsed vertebra, not elsewhere classified,...
        • M48.56 Collapsed vertebra, not elsewhere classified,...
          • M48.56XA Collapsed vertebra, not elsewhere classified,...
          • M48.56XD Collapsed vertebra, not elsewhere classified,...
          • M48.56XG Collapsed vertebra, not elsewhere classified,...
          • M48.56XS Collapsed vertebra, not elsewhere classified,...
        • M48.57 Collapsed vertebra, not elsewhere classified,...
          • M48.57XA Collapsed vertebra, not elsewhere classified,...
          • M48.57XD Collapsed vertebra, not elsewhere classified,...
          • M48.57XG Collapsed vertebra, not elsewhere classified,...
          • M48.57XS Collapsed vertebra, not elsewhere classified,...
        • M48.58 Collapsed vertebra, not elsewhere classified,...
          • M48.58XA Collapsed vertebra, not elsewhere classified,...
          • M48.58XD Collapsed vertebra, not elsewhere classified,...
          • M48.58XG Collapsed vertebra, not elsewhere classified,...
          • M48.58XS Collapsed vertebra, not elsewhere classified,...
      • M48.8 Other specified spondylopathies
        • M48.8X Other specified spondylopathies
          • M48.8X1 Other specified spondylopathies, occipito-atl...
          • M48.8X2 Other specified spondylopathies, cervical reg...
          • M48.8X3 Other specified spondylopathies, cervicothora...
          • M48.8X4 Other specified spondylopathies, thoracic reg...
          • M48.8X5 Other specified spondylopathies, thoracolumba...
          • M48.8X6 Other specified spondylopathies, lumbar regio...
          • M48.8X7 Other specified spondylopathies, lumbosacral ...
          • M48.8X8 Other specified spondylopathies, sacral and s...
          • M48.8X9 Other specified spondylopathies, site unspeci...
      • M48.9 Spondylopathy, unspecified
    M48.-
    )
  • nerve root compression (due to) (in) spondylosis (
    ICD-10-CM Diagnosis Code M47.0

    Anterior spinal and vertebral artery compression syndromes

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    M47.0-
    ICD-10-CM Diagnosis Code M47.2

    Other spondylosis with radiculopathy

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    M47.2.-
    )
The following code(s) above G55 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to G55:
  • G00-G99
    2020 ICD-10-CM Range G00-G99

    Diseases of the nervous system

    Type 2 Excludes
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • complications of pregnancy, childbirth and the puerperium (O00-O9A)
    • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
    • endocrine, nutritional and metabolic diseases (E00-E88)
    • injury, poisoning and certain other consequences of external causes (S00-T88)
    • neoplasms (C00-D49)
    • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
    Diseases of the nervous system
  • G50-G59
    2020 ICD-10-CM Range G50-G59

    Nerve, nerve root and plexus disorders

    Type 1 Excludes
    • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
    • neuralgia NOS (M79.2)
    • neuritis NOS (M79.2)
    • peripheral neuritis in pregnancy (O26.82-)
    • radiculitis NOS (M54.1-)
    Nerve, nerve root and plexus disorders
ICD-10-CM G55 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 073 Cranial and peripheral nerve disorders with mcc
  • 074 Cranial and peripheral nerve disorders without mcc

Convert G55 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To G55
G54.0 Brachial plexus disorders
G54.1 Lumbosacral plexus disorders
G54.2 Cervical root disorders, not elsewhere classified
G54.3 Thoracic root disorders, not elsewhere classified
G54.4 Lumbosacral root disorders, not elsewhere classified
G54.5 Neuralgic amyotrophy
G54.6 Phantom limb syndrome with pain
G54.7 Phantom limb syndrome without pain
G54.8 Other nerve root and plexus disorders
G54.9 Nerve root and plexus disorder, unspecified
G55 Nerve root and plexus compressions in diseases classified elsewhere
G56 Mononeuropathies of upper limb
G56.0 Carpal tunnel syndrome
G56.00 …… unspecified upper limb
G56.01 …… right upper limb
G56.02 …… left upper limb
G56.03 …… bilateral upper limbs
G56.1 Other lesions of median nerve
G56.10 …… unspecified upper limb
G56.11 …… right upper limb
G56.12 …… left upper limb

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.