MCMCB Pro
M12.049

M12.049Chronic postrheumatic arthropathy [Jaccoud], unspecified hand

Billable / specific codeICD-10-CMunspecified

M12.049 is a billable, specific ICD-10-CM code for chronic postrheumatic arthropathy [jaccoud], unspecified hand. It is valid for submission on a claim.

Risk adjustment

M12.049 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 94 Systemic Lupus Erythematosus and Other Specified Systemic Connective Tissue Disorders0.268 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.

Medicare coverage

M12.049 is named in 6 Medicare coverage policies 0 listing it as supporting medical necessity, and 6 listing it as NOT covered. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A58865Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A58893Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A59374Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered
  • A59434Billing and Coding: Amniotic and Placental-Derived Product Injections and/or Applications for Musculoskeletal Indications, Non-Woundnot covered

Related codes at this level

Codes that share M12.04. If M12.049 is not quite right, the correct code is usually one of these.

Questions about M12.049

Is M12.049 a billable ICD-10-CM code?
Yes. M12.049 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does M12.049 sit in the tabular list?
Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Inflammatory polyarthropathies (M05-M14).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.