M91 – Juvenile osteochondrosis of hip and pelvis
ICD-10-CM 2027 diagnosis code · Chondropathies
ICD-10-CM code
M91
- Code
M91(claims format:M91)- Description
- Juvenile osteochondrosis of hip and pelvis
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 13. Diseases of the musculoskeletal system and connective tissue (M00-M99)
- Block
- M91-M94 Chondropathies
Billable codes under M91
M91 is a header code and cannot be used on claims. Choose the most specific code:
- M91.0 – Juvenile osteochondrosis of pelvisBillable
- M91.1 – Juvenile osteochondrosis of head of femur [Legg-Calve-Perthes]Header (more codes below)
- M91.2 – Coxa planaHeader (more codes below)
- M91.3 – PseudocoxalgiaHeader (more codes below)
- M91.4 – Coxa magnaHeader (more codes below)
- M91.8 – Other juvenile osteochondrosis of hip and pelvisHeader (more codes below)
- M91.9 – Juvenile osteochondrosis of hip and pelvis, unspecifiedHeader (more codes below)
Notes for M91
Excludes1 (not coded here):
- slipped upper femoral epiphysis (nontraumatic) (M93.0-)
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block M91-M94
Excludes1 (not coded here):
- postprocedural chondropathies (M96.-)
Frequently asked questions
What is ICD-10 code M91?
M91 is the ICD-10-CM code for juvenile osteochondrosis of hip and pelvis, in the block M91-M94 (Chondropathies).
Is M91 a billable code?
No. M91 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.