2020 ICD-10-CM Diagnosis Code M05.9

Rheumatoid arthritis with rheumatoid factor, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • M05.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM M05.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of M05.9 - other international versions of ICD-10 M05.9 may differ.
The following code(s) above M05.9 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 M05.9:
  • 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
  • Seropositive rheumatoid arthritis
ICD-10-CM M05.9 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 M05.9 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 M05.9:
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90
    ICD-10-CM Diagnosis Code M19.90

    Unspecified osteoarthritis, unspecified site

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Arthrosis NOS
    • Arthritis NOS
    • Osteoarthritis NOS
    • rheumatoid M06.9
      ICD-10-CM Diagnosis Code M06.9

      Rheumatoid arthritis, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code

ICD-10-CM Codes Adjacent To M05.9
M05.859 Other rheumatoid arthritis with rheumatoid factor of unspecified hip
M05.86 Other rheumatoid arthritis with rheumatoid factor of knee
M05.861 Other rheumatoid arthritis with rheumatoid factor of right knee
M05.862 Other rheumatoid arthritis with rheumatoid factor of left knee
M05.869 Other rheumatoid arthritis with rheumatoid factor of unspecified knee
M05.87 Other rheumatoid arthritis with rheumatoid factor of ankle and foot
M05.871 Other rheumatoid arthritis with rheumatoid factor of right ankle and foot
M05.872 Other rheumatoid arthritis with rheumatoid factor of left ankle and foot
M05.879 Other rheumatoid arthritis with rheumatoid factor of unspecified ankle and foot
M05.89 …… of multiple sites
M05.9 Rheumatoid arthritis with rheumatoid factor, unspecified
M06 Other rheumatoid arthritis
M06.0 Rheumatoid arthritis without rheumatoid factor
M06.00 …… unspecified site
M06.01 Rheumatoid arthritis without rheumatoid factor, shoulder
M06.011 Rheumatoid arthritis without rheumatoid factor, right shoulder
M06.012 Rheumatoid arthritis without rheumatoid factor, left shoulder
M06.019 Rheumatoid arthritis without rheumatoid factor, unspecified shoulder
M06.02 Rheumatoid arthritis without rheumatoid factor, elbow
M06.021 Rheumatoid arthritis without rheumatoid factor, right elbow
M06.022 Rheumatoid arthritis without rheumatoid factor, left elbow

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