2021 ICD-10-CM Diagnosis Code M43.00

Spondylolysis, site unspecified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code
  • M43.00 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM M43.00 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of M43.00 - other international versions of ICD-10 M43.00 may differ.
The following code(s) above M43.00 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 M43.00:
  • M00-M99
    2021 ICD-10-CM Range M00-M99

    Diseases of the musculoskeletal system and connective tissue

    • 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
  • M43
    ICD-10-CM Diagnosis Code M43

    Other deforming dorsopathies

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital spondylolysis and spondylolisthesis (Q76.2)
    • hemivertebra (Q76.3-Q76.4)
    • Klippel-Feil syndrome (Q76.1)
    • lumbarization and sacralization (Q76.4)
    • platyspondylisis (Q76.4)
    • spina bifida occulta (Q76.0)
    • spinal curvature in osteoporosis (M80.-)
    • spinal curvature in Paget's disease of bone [osteitis deformans] (M88.-)
    Other deforming dorsopathies
  • M43.0
    ICD-10-CM Diagnosis Code M43.0


      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital spondylolysis (Q76.2)
    • spondylolisthesis (M43.1)
Approximate Synonyms
  • Acquired spondylolysis
  • Spondylolysis, acquired
Clinical Information
  • Deficient development or degeneration of a portion of the vertebra, usually in the pars interarticularis (the bone bridge between the superior and inferior facet joints of the lumbar vertebrae) leading to spondylolisthesis.
ICD-10-CM M43.00 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 551 Medical back problems with mcc
  • 552 Medical back problems without mcc

Convert M43.00 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
  • 2021 (effective 10/1/2020): No change

Diagnosis Index entries containing back-references to M43.00:

ICD-10-CM Codes Adjacent To M43.00
M42.13 …… cervicothoracic region
M42.14 …… thoracic region
M42.15 …… thoracolumbar region
M42.16 …… lumbar region
M42.17 …… lumbosacral region
M42.18 …… sacral and sacrococcygeal region
M42.19 …… multiple sites in spine
M42.9 Spinal osteochondrosis, unspecified
M43 Other deforming dorsopathies
M43.0 Spondylolysis
M43.00 …… site unspecified
M43.01 …… occipito-atlanto-axial region
M43.02 …… cervical region
M43.03 …… cervicothoracic region
M43.04 …… thoracic region
M43.05 …… thoracolumbar region
M43.06 …… lumbar region
M43.07 …… lumbosacral region
M43.08 …… sacral and sacrococcygeal region
M43.09 …… multiple sites in spine
M43.1 Spondylolisthesis

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