2020 ICD-10-CM Diagnosis Code M46

Other inflammatory spondylopathies

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • M46 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM M46 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M46 - other international versions of ICD-10 M46 may differ.
The following code(s) above M46 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 M46:
  • M00-M99
    2020 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    Note
    • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition
    Type 2 Excludes
    • arthropathic psoriasis (L40.5-)
    • certain conditions originating in the perinatal period (P04-P96)
    • certain infectious and parasitic diseases (A00-B99)
    • compartment syndrome (traumatic) (T79.A-)
    • 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 musculoskeletal system and connective tissue
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
Code annotations containing back-references to M46:
  • Type 1 Excludes: G55
    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
    Code First
    • underlying disease, such as:
    • neoplasm (C00-D49)
    Type 1 Excludes
    • nerve root compression (due to) (in) ankylosing spondylitis (M45.-)
    • nerve root compression (due to) (in) dorsopathies (M53.-, M54.-)
    • nerve root compression (due to) (in) intervertebral disc disorders (M50.1.-, M51.1.-)
    • nerve root compression (due to) (in) spondylopathies (M46.-, M48.-)
    • nerve root compression (due to) (in) spondylosis (M47.0-M47.2.-)
ICD-10-CM Codes Adjacent To M46
M45.0 Ankylosing spondylitis of multiple sites in spine
M45.1 Ankylosing spondylitis of occipito-atlanto-axial region
M45.2 Ankylosing spondylitis of cervical region
M45.3 Ankylosing spondylitis of cervicothoracic region
M45.4 Ankylosing spondylitis of thoracic region
M45.5 Ankylosing spondylitis of thoracolumbar region
M45.6 Ankylosing spondylitis lumbar region
M45.7 Ankylosing spondylitis of lumbosacral region
M45.8 Ankylosing spondylitis sacral and sacrococcygeal region
M45.9 Ankylosing spondylitis of unspecified sites in spine
M46 Other inflammatory spondylopathies
M46.0 Spinal enthesopathy
M46.00 …… site unspecified
M46.01 …… occipito-atlanto-axial region
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 …… sacral and sacrococcygeal region

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