M91.42 – Coxa magna, left hip
ICD-10-CM 2027 diagnosis code · Chondropathies
ICD-10-CM code
M91.42
- Code
M91.42(claims format:M9142)- Description
- Coxa magna, left hip
- Billable
- Yes – valid for HIPAA-covered transactions
- 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
- Parent codes
- M91 › M91.4
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
M91 – Juvenile osteochondrosis of hip and pelvis
Excludes1 (not coded here):
- slipped upper femoral epiphysis (nontraumatic) (M93.0-)
Block M91-M94
Excludes1 (not coded here):
- postprocedural chondropathies (M96.-)
Related codes in M91.4
Frequently asked questions
What is ICD-10 code M91.42?
M91.42 is the ICD-10-CM code for coxa magna, left hip, in the block M91-M94 (Chondropathies).
Is M91.42 a billable code?
Yes. M91.42 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does M91.42 belong to?
It belongs to category M91 – Juvenile osteochondrosis of hip and pelvis.
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.