2022 ICD-10-CM Diagnosis Code M45.A6

Non-radiographic axial spondyloarthritis of lumbar region

    2022 - New Code Billable/Specific Code
  • M45.A6 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • ICD-10-CM M45.A6 is a new 2022 ICD-10-CM code that became effective on October 1, 2021.
  • This is the American ICD-10-CM version of M45.A6 - other international versions of ICD-10 M45.A6 may differ.
The following code(s) above M45.A6 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 M45.A6:
  • M00-M99
    2022 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
  • M45
    ICD-10-CM Diagnosis Code M45

    Ankylosing spondylitis

      2016 2017 2018 2019 2020 2021 2022 Non-Billable/Non-Specific Code
    Applicable To
    • Rheumatoid arthritis of spine
    Type 1 Excludes
    • arthropathy in Reiter's disease (M02.3-)
    • juvenile (ankylosing) spondylitis (M08.1)
    Type 2 Excludes
    • Behçet's disease (M35.2)
    Ankylosing spondylitis
ICD-10-CM M45.A6 is grouped within Diagnostic Related Group(s) (MS-DRG v39.0):
  • 545 Connective tissue disorders with mcc
  • 546 Connective tissue disorders with cc
  • 547 Connective tissue disorders without cc/mcc
Code History
  • 2022 (effective 10/1/2021): New code

Diagnosis Index entries containing back-references to M45.A6:
  • Spondyloarthritis
    • axial - see also Spondlyitis, ankylosing
      • non-radiographic M45.A0
        ICD-10-CM Diagnosis Code M45.A0

        Non-radiographic axial spondyloarthritis of unspecified sites in spine

          2022 - New Code Billable/Specific Code
        • lumbar M45.A6

ICD-10-CM Codes Adjacent To M45.A6
M45.7 Ankylosing spondylitis of lumbosacral region
M45.8 Ankylosing spondylitis sacral and sacrococcygeal region
M45.9 Ankylosing spondylitis of unspecified sites in spine
M45.A Non-radiographic axial spondyloarthritis
M45.A0 …… of unspecified sites in spine
M45.A1 …… of occipito-atlanto-axial region
M45.A2 …… of cervical region
M45.A3 …… of cervicothoracic region
M45.A4 …… of thoracic region
M45.A5 …… of thoracolumbar region
M45.A6 …… of lumbar region
M45.A7 …… of lumbosacral region
M45.A8 …… of sacral and sacrococcygeal region
M45.AB …… of multiple 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

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