M12.9 Arthropathy, unspecified

Billable ICD-10-CM code, FY2026.

Applies from M12 Other and unspecified arthropathy

Excludes1 (never code together)

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

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 716.90 Arthropathy, unspecified, site unspecified (approximate)

Diagnosis Index entries for M12.9

• Arthropathy

Nearby codes

• M12.871 Other specific arthropathies, not elsewhere classified, right ankle and foot
• M12.872 Other specific arthropathies, not elsewhere classified, left ankle and foot
• M12.879 Other specific arthropathies, not elsewhere classified, unspecified ankle and foot
• M12.88 Other specific arthropathies, not elsewhere classified, other specified site
• M12.89 Other specific arthropathies, not elsewhere classified, multiple sites
• M12.9 Arthropathy, unspecified (this code)