M12.00 Chronic postrheumatic arthropathy [Jaccoud], unspecified site

Billable ICD-10-CM code, FY2026.

Applies from M12 Other and unspecified arthropathy

Excludes1 (never code together)

• arthrosis (M15-M19)
• cricoarytenoid arthropathy (J38.7)

Risk adjustment (HCC)

• CMS-HCC V28: HCC 94 — Systemic Lupus Erythematosus and Other Specified Systemic Connective Tissue Disorders
• CMS-HCC V22: HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
• RxHCC V08: HCC 83 — Rheumatoid Arthritis and Other Inflammatory Polyarthropathy
• ESRD V24: HCC 40

MS-DRG index

Defines the logic of DRG(s) 553-554 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 714.4 Chronic postrheumatic arthropathy (approximate)

Diagnosis Index entries for M12.00

• Arthropathy › postrheumatic, chronic (Jaccoud)

Nearby codes

• M12 Other and unspecified arthropathy
• M12.0 Chronic postrheumatic arthropathy [Jaccoud]
• M12.00 Chronic postrheumatic arthropathy [Jaccoud], unspecified site (this code)
• M12.01 Chronic postrheumatic arthropathy [Jaccoud], shoulder
• M12.011 Chronic postrheumatic arthropathy [Jaccoud], right shoulder
• M12.012 Chronic postrheumatic arthropathy [Jaccoud], left shoulder
• M12.019 Chronic postrheumatic arthropathy [Jaccoud], unspecified shoulder
• M12.02 Chronic postrheumatic arthropathy [Jaccoud], elbow