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M05Non-billableSave

M05 - Rheumatoid arthritis with rheumatoid factor

ICD-10-CM Chapter 13: Diseases of the musculoskeletal system and connective tissue · M05-M14 Inflammatory polyarthropathies (M05-M14) · Top-level category · FY2027

Coding Guidance

M05 is a non-billable heading. Report one of the 11 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom M05

Mutually exclusive: these conditions are never reported together with this code.

  • rheumatic fever (I00)
  • juvenile rheumatoid arthritis (M08.-)
  • rheumatoid arthritis of spine (M45.-)
Excludes 2 — Not Included HereFrom Chapter M00-M99

Not part of this code; report both codes when the patient has both conditions.

  • 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)
NotesFrom Chapter M00-M99

Instructional notes from the ICD-10-CM tabular list.

  • Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

More Specific Codes (11)

M05.0Felty's syndrome→M05.1Rheumatoid lung disease with rheumatoid arthritis→M05.2Rheumatoid vasculitis with rheumatoid arthritis→M05.3Rheumatoid heart disease with rheumatoid arthritis→M05.4Rheumatoid myopathy with rheumatoid arthritis→M05.5Rheumatoid polyneuropathy with rheumatoid arthritis→M05.6Rheumatoid arthritis with involvement of other organs and systems→M05.7Rheumatoid arthritis with rheumatoid factor without organ or systems involvement→M05.8Other rheumatoid arthritis with rheumatoid factor→M05.9Rheumatoid arthritis with rheumatoid factor, unspecified→M05.AAbnormal rheumatoid factor and anti-citrullinated protein antibody with rheumatoid arthritis→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with M05.