ICD-10-CM 2027 diagnosis code
M05.6Rheumatoid arthritis with involvement of other organs and systems
M05.6 is a header code, so it can't be reported by itself. Choose one of the 9 more specific codes beneath it.Short description: Rheumatoid arthritis w involvement of oth organs and systems
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About M05.6
M05.6 is the ICD-10-CM diagnosis code for rheumatoid arthritis with involvement of other organs and systems. It belongs to category M05 (rheumatoid arthritis with rheumatoid factor), block M05-M14 (inflammatory polyarthropathies) and chapter 13 (diseases of the musculoskeletal system and connective tissue). It is a header code, so it can't be reported by itself; one of its 9 subcodes must be used instead.
Within M05, choose M05.6 (Rheumatoid arthritis with involvement of other organs and systems) only when documentation doesn't support a more specific option: Felty's syndrome (M05.0), rheumatoid lung disease with rheumatoid arthritis (M05.1), rheumatoid vasculitis with rheumatoid arthritis (M05.2), rheumatoid heart disease with rheumatoid arthritis (M05.3), rheumatoid myopathy with rheumatoid arthritis (M05.4), rheumatoid polyneuropathy with rheumatoid arthritis (M05.5), without organ or systems involvement (M05.7), other rheumatoid arthritis with rheumatoid factor (M05.8) and 2 more.
To report this condition, pick the subcode that matches the documentation: M05.60 (systems), M05.61 (systems), M05.62 (systems), M05.63 (systems), M05.64 (systems), M05.65 (systems), M05.66 (systems), M05.67 (systems) and 1 more.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Specific codes under M05.6
- M05.60Rheumatoid arthritis of unspecified site with involvement of other organs and systemsBillable
- M05.61Rheumatoid arthritis of shoulder with involvement of other organs and systems
- M05.62Rheumatoid arthritis of elbow with involvement of other organs and systems
- M05.63Rheumatoid arthritis of wrist with involvement of other organs and systems
- M05.64Rheumatoid arthritis of hand with involvement of other organs and systems
- M05.65Rheumatoid arthritis of hip with involvement of other organs and systems
- M05.66Rheumatoid arthritis of knee with involvement of other organs and systems
- M05.67Rheumatoid arthritis of ankle and foot with involvement of other organs and systems
- M05.671Rheumatoid arthritis of right ankle and foot with involvement of other organs and systemsBillable
- M05.672Rheumatoid arthritis of left ankle and foot with involvement of other organs and systemsBillable
- M05.679Rheumatoid arthritis of unspecified ankle and foot with involvement of other organs and systemsBillable
- M05.69Rheumatoid arthritis of multiple sites with involvement of other organs and systemsBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to M05.6.
Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about M05.6
Is M05.6 billable?
- No. M05.6 is a header code. Report one of its more specific subcodes instead.