M12.449 Intermittent hydrarthrosis, unspecified hand

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)

• 719.34 Palindromic rheumatism, hand (approximate)

Code annotations containing back-references to M12.449

Back-references to M12.4

• Type 1 Excludes: M25.4 Effusion of joint ("intermittent hydrarthrosis (M12.4-)")

Nearby codes

• M12.432 Intermittent hydrarthrosis, left wrist
• M12.439 Intermittent hydrarthrosis, unspecified wrist
• M12.44 Intermittent hydrarthrosis, hand
• M12.441 Intermittent hydrarthrosis, right hand
• M12.442 Intermittent hydrarthrosis, left hand
• M12.449 Intermittent hydrarthrosis, unspecified hand (this code)
• M12.45 Intermittent hydrarthrosis, hip
• M12.451 Intermittent hydrarthrosis, right hip
• M12.452 Intermittent hydrarthrosis, left hip
• M12.459 Intermittent hydrarthrosis, unspecified hip
• M12.46 Intermittent hydrarthrosis, knee