ICD-10-CM 2027
ICD-10 code for hip joint disease
From the official ICD-10-CM alphabetic index entry “Disease, diseased › hip (joint)”. Page updated September 29, 2026.
About coding hip joint disease
The ICD-10-CM code for hip joint disease is M25.9 (Joint disorder, unspecified). The official index lists 3 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on M25.9.
Within M25, choose M25.9 (Joint disorder, unspecified) only when documentation doesn't support a more specific option: Hemarthrosis (M25.0), fistula of joint (M25.1), Flail joint (M25.2), other instability of joint (M25.3), effusion of joint (M25.4), pain in joint (M25.5), Stiffness of joint, not elsewhere classified (M25.6), Osteophyte (M25.7) and 1 more.
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 555 (Signs and Symptoms of Musculoskeletal System and Connective Tissue with MCC, relative weight 1.2913) and DRG 556 (Signs and Symptoms of Musculoskeletal System and Connective Tissue without MCC, relative weight 0.8211), in MDC 08 (Diseases and Disorders of the Musculoskeletal System and Connective Tissue), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific hip joint disease codes (official index)
Common questions about hip joint disease ICD-10 codes
What is the ICD-10 code for hip joint disease?
- M25.9 — Joint disorder, unspecified. More specific codes apply when the documentation supports them: Q65.89, M00.9, A18.02.
What is the ICD-10 code for congenital hip joint disease?
- Q65.89 — Other specified congenital deformities of hip.
What is the ICD-10 code for suppurative hip joint disease?
- M00.9 — Pyogenic arthritis, unspecified.
What is the ICD-10 code for tuberculous hip joint disease?
- A18.02 — Tuberculous arthritis of other joints.
Is M25.9 billable?
- Yes. M25.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can M25.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict M25.9 as a principal diagnosis.
Is M25.9 a CC or MCC?
- No. M25.9 is neither a CC nor an MCC under MS-DRG v44.0.