MCMCB Pro
M91.10

M91.10Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes], unspecified leg

Billable / specific codeICD-10-CMunspecified

M91.10 is a billable, specific ICD-10-CM code for juvenile osteochondrosis of head of femur [legg-calve-perthes], unspecified leg. It is valid for submission on a claim.

Risk adjustment

M91.10 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

M91.10 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 M91.1. If M91.10 is not quite right, the correct code is usually one of these.

Questions about M91.10

Is M91.10 a billable ICD-10-CM code?
Yes. M91.10 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does M91.10 sit in the tabular list?
Diseases of the musculoskeletal system and connective tissue (M00-M99), in the block Chondropathies (M91-M94).
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.