2019 ICD-10-CM Diagnosis Code M47.021

Vertebral artery compression syndromes, occipito-atlanto-axial region

    2016 2017 2018 2019 Billable/Specific Code
  • M47.021 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Verteb art compression syndromes, occipt-atlan-ax region
  • The 2019 edition of ICD-10-CM M47.021 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of M47.021 - other international versions of ICD-10 M47.021 may differ.
The following code(s) above M47.021 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 M47.021:
  • M00-M99
    2019 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
  • M47
    ICD-10-CM Diagnosis Code M47


      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    • arthrosis or osteoarthritis of spine
    • degeneration of facet joints
Approximate Synonyms
  • Occipitoatlantoaxial vertebral artery compression
  • Vertebral artery compression syndrome of occipitoatlantoaxial region
  • Vertebral artery syndrome of occipitatlantoaxial
ICD-10-CM M47.021 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 551 Medical back problems with mcc
  • 552 Medical back problems without mcc

Convert M47.021 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

Diagnosis Index entries containing back-references to M47.021:
  • Syndrome - see also Disease
    • compression T79.5
      ICD-10-CM Diagnosis Code T79.5

      Traumatic anuria

        2016 2017 2018 2019 Non-Billable/Non-Specific Code
      Applicable To
      • Crush syndrome
      • Renal failure following crushing
      • vertebral artery M47.029
        ICD-10-CM Diagnosis Code M47.029

        Vertebral artery compression syndromes, site unspecified

          2016 2017 2018 2019 Billable/Specific Code
        • occipito-atlanto-axial region M47.021

ICD-10-CM Codes Adjacent To M47.021
M47.0 Anterior spinal and vertebral artery compression syndromes
M47.01 Anterior spinal artery compression syndromes
M47.011 …… occipito-atlanto-axial region
M47.012 …… cervical region
M47.013 …… cervicothoracic region
M47.014 …… thoracic region
M47.015 …… thoracolumbar region
M47.016 …… lumbar region
M47.019 …… site unspecified
M47.02 Vertebral artery compression syndromes
M47.021 …… occipito-atlanto-axial region
M47.022 …… cervical region
M47.029 …… site unspecified
M47.1 Other spondylosis with myelopathy
M47.10 …… site unspecified
M47.11 …… occipito-atlanto-axial region
M47.12 …… cervical region
M47.13 …… cervicothoracic region
M47.14 …… thoracic region
M47.15 …… thoracolumbar region
M47.16 …… lumbar region

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