ICD-10-CM 2027 diagnosis code
M12.3Palindromic rheumatism
M12.3 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.
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 M12.3
M12.3 is the ICD-10-CM diagnosis code for Palindromic rheumatism. It belongs to category M12 (other and unspecified arthropathy), 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 10 subcodes must be used instead.
Within M12 (other and unspecified arthropathy), M12.3 is specifically for Palindromic rheumatism. Related codes cover chronic postrheumatic arthropathy [Jaccoud] (M12.0), Kaschin-Beck disease (M12.1), Villonodular synovitis (pigmented) (M12.2), intermittent hydrarthrosis (M12.4), traumatic arthropathy (M12.5), other specific arthropathies, not elsewhere classified (M12.8) and arthropathy, unspecified (M12.9).
To report this condition, pick the subcode that matches the documentation: M12.30 (unspecified site), M12.31 (shoulder), M12.32 (elbow), M12.33 (wrist), M12.34 (hand), M12.35 (hip), M12.36 (knee), M12.37 (ankle and foot) and 2 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 M12.3
- M12.30Palindromic rheumatism, unspecified siteBillable
- M12.31Palindromic rheumatism, shoulder
- M12.32Palindromic rheumatism, elbow
- M12.33Palindromic rheumatism, wrist
- M12.34Palindromic rheumatism, hand
- M12.35Palindromic rheumatism, hip
- M12.36Palindromic rheumatism, knee
- M12.37Palindromic rheumatism, ankle and foot
- M12.38Palindromic rheumatism, other specified siteBillable
- M12.39Palindromic rheumatism, multiple sitesBillable
Notes that apply from higher levels
Instructions written at a parent level also apply to M12.3.
Broader instructions also apply from Chapter 13: Diseases of the musculoskeletal system and connective tissue.
Codes whose notes reference M12.3
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 M12.3
Is M12.3 billable?
- No. M12.3 is a header code. Report one of its more specific subcodes instead.