ICD-10-CM 2027
ICD-10 code for joint disorder
From the official ICD-10-CM alphabetic index entry “Disorder (of) › joint”. Page updated September 29, 2026.
About coding joint disorder
The ICD-10-CM code for joint disorder is M25.9 (Joint disorder, unspecified). The official index lists 10 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 joint disorder codes (official index)
- derangement
- effusion
- fistula
- hemarthrosis
- instability
- osteophyte
- pain
- psychogenic F45.8 — Other somatoform disorders
- specified type NEC M25.80 — Other specified joint disorders, unspecified joint
- ankle M25.87 — Other specified joint disorders, ankle and foot
- elbow M25.82 — Other specified joint disorders, elbow
- foot joint M25.87 — Other specified joint disorders, ankle and foot
- hand joint M25.84 — Other specified joint disorders, hand
- hip M25.85 — Other specified joint disorders, hip
- knee M25.86 — Other specified joint disorders, knee
- shoulder M25.81 — Other specified joint disorders, shoulder
- wrist M25.83 — Other specified joint disorders, wrist
- stiffness
Common questions about joint disorder ICD-10 codes
What is the ICD-10 code for joint disorder?
- M25.9 — Joint disorder, unspecified. More specific codes apply when the documentation supports them: F45.8, M25.80, M25.87, M25.82 and others below.
What is the ICD-10 code for psychogenic joint disorder?
- F45.8 — Other somatoform disorders.
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.