M08.042 Unspecified juvenile rheumatoid arthritis, left hand

Billable ICD-10-CM code, FY2026.

Applies from M08 Juvenile arthritis

Excludes1 (never code together)

• arthropathy in Whipple's disease (M14.8)
• Felty's syndrome (M05.0)
• juvenile dermatomyositis (M33.0-)
• psoriatic juvenile arthropathy (L40.54)

Code also

• any associated underlying condition, such as:
• regional enteritis [Crohn's disease] (K50.-)
• ulcerative colitis (K51.-)

Applies from M08.0 Unspecified juvenile rheumatoid arthritis

Applicable to

• Juvenile rheumatoid arthritis with or without rheumatoid factor

Risk adjustment (HCC)

• CMS-HCC V28: HCC 93 — Rheumatoid Arthritis and Other Specified Inflammatory Rheumatic 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) 545-547 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 714.30 Polyarticular juvenile rheumatoid arthritis, chronic or unspecified (approximate)

Code annotations containing back-references to M08.042

Back-references to M08.0

• Type 1 Excludes: M08.9 Juvenile arthritis, unspecified ("juvenile rheumatoid arthritis, unspecified (M08.0-)")

Back-references to M08

• Type 1 Excludes: M05 Rheumatoid arthritis with rheumatoid factor ("juvenile rheumatoid arthritis (M08.-)")

Nearby codes

• M08.031 Unspecified juvenile rheumatoid arthritis, right wrist
• M08.032 Unspecified juvenile rheumatoid arthritis, left wrist
• M08.039 Unspecified juvenile rheumatoid arthritis, unspecified wrist
• M08.04 Unspecified juvenile rheumatoid arthritis, hand
• M08.041 Unspecified juvenile rheumatoid arthritis, right hand
• M08.042 Unspecified juvenile rheumatoid arthritis, left hand (this code)
• M08.049 Unspecified juvenile rheumatoid arthritis, unspecified hand
• M08.05 Unspecified juvenile rheumatoid arthritis, hip
• M08.051 Unspecified juvenile rheumatoid arthritis, right hip
• M08.052 Unspecified juvenile rheumatoid arthritis, left hip
• M08.059 Unspecified juvenile rheumatoid arthritis, unspecified hip