M05.452

Billable

Rheumatoid myopathy with rheumatoid arthritis of left hip

HCC Category Mapping

V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.175

V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.307

ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.000

RxHCCHCC 83 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.000

What This Code Means

A condition where rheumatoid arthritis causes inflammation and muscle weakness in the left hip.

Coding Tips

•Confirm left hip is specifically documented in clinical notes or imaging
•The '2' fifth character indicates left side; do not use for right or unspecified hip

Clinical Significance

This diagnosis represents rheumatoid arthritis of the left hip with concurrent myopathy, indicating advanced systemic inflammatory disease with potential for severe functional impairment. Hip involvement often requires aggressive treatment and possible surgical intervention, while myopathy complicates rehabilitation and recovery.

Documentation Requirements

✓Established rheumatoid arthritis diagnosis with appropriate criteria
✓Clear documentation of left hip joint involvement
✓Evidence of myopathy with muscle weakness, wasting, or dysfunction
✓Radiographic evidence of inflammatory arthritis in left hip
✓Functional assessment demonstrating mobility limitations
✓Clinical examination findings supporting both conditions
✓Comprehensive treatment plan for inflammatory arthritis and myopathy

Commonly Confused Codes

M05.451 — Rheumatoid myopathy with RA of right hip (different laterality)M05.459 — Rheumatoid myopathy with RA of unspecified hip (when side unknown)M06.852 — Other specified rheumatoid arthritis, left hip (lacks myopathy)M16.12 — Unilateral primary osteoarthritis, left hip (different arthritis type)M25.552 — Pain in left hip (symptom code only)

Code Hierarchy

└M05Rheumatoid arthritis with rheumatoid factor └M05.4Rheumatoid myopathy with rheumatoid arthritis └M05.45Rheumatoid myopathy with rheumatoid arthritis of hip └M05.452Rheumatoid myopathy with rheumatoid arthritis of left hip

└M05.452Rheumatoid myopathy with rheumatoid arthritis of left hip