2019/2020

  1. ICD-10-CM Codes
    2. ›
  2. M00-M99 Diseases of the musculoskeletal system and connective tissue
    3. ›
  3. M05-M1A Inflammatory polyarthropathies
    4. ›
  4. M05- Rheumatoid arthritis with rheumatoid factor
    5. ›

2020 ICD-10-CM Diagnosis Code M05.40

Rheumatoid myopathy with rheumatoid arthritis of unspecified site

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M05.40 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Rheumatoid myopathy with rheumatoid arthritis of unsp site
  • The 2020 edition of ICD-10-CM M05.40 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M05.40 - other international versions of ICD-10 M05.40 may differ.
The following code(s) above M05.40 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 M05.40:
  • 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
  • M05
    ICD-10-CM Diagnosis Code M05

    Rheumatoid arthritis with rheumatoid factor

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • rheumatic fever (I00)
    • juvenile rheumatoid arthritis (M08.-)
    • rheumatoid arthritis of spine (M45.-)
    Rheumatoid arthritis with rheumatoid factor
Approximate Synonyms
  • Myopathy due to rheumatoid arthritis
ICD-10-CM M05.40 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 545 Connective tissue disorders with mcc
  • 546 Connective tissue disorders with cc
  • 547 Connective tissue disorders without cc/mcc

Convert M05.40 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

Diagnosis Index entries containing back-references to M05.40:

ICD-10-CM Codes Adjacent To M05.40
M05.36 Rheumatoid heart disease with rheumatoid arthritis of knee
M05.361 Rheumatoid heart disease with rheumatoid arthritis of right knee
M05.362 Rheumatoid heart disease with rheumatoid arthritis of left knee
M05.369 Rheumatoid heart disease with rheumatoid arthritis of unspecified knee
M05.37 Rheumatoid heart disease with rheumatoid arthritis of ankle and foot
M05.371 Rheumatoid heart disease with rheumatoid arthritis of right ankle and foot
M05.372 Rheumatoid heart disease with rheumatoid arthritis of left ankle and foot
M05.379 Rheumatoid heart disease with rheumatoid arthritis of unspecified ankle and foot
M05.39 …… of multiple sites
M05.4 Rheumatoid myopathy with rheumatoid arthritis
M05.40 …… of unspecified site
M05.41 Rheumatoid myopathy with rheumatoid arthritis of shoulder
M05.411 Rheumatoid myopathy with rheumatoid arthritis of right shoulder
M05.412 Rheumatoid myopathy with rheumatoid arthritis of left shoulder
M05.419 Rheumatoid myopathy with rheumatoid arthritis of unspecified shoulder
M05.42 Rheumatoid myopathy with rheumatoid arthritis of elbow
M05.421 Rheumatoid myopathy with rheumatoid arthritis of right elbow
M05.422 Rheumatoid myopathy with rheumatoid arthritis of left elbow
M05.429 Rheumatoid myopathy with rheumatoid arthritis of unspecified elbow
M05.43 Rheumatoid myopathy with rheumatoid arthritis of wrist
M05.431 Rheumatoid myopathy with rheumatoid arthritis of right wrist

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

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