C47.21

Billable

Malignant neoplasm of peripheral nerves of right lower limb, including hip

HCC Category Mapping

V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors

0.545

V24HCC 10 — Lymphoma and Other Cancers

0.675

ESRDHCC 10 — Lymphoma and Other Cancers

0.000

RxHCCHCC 22 — Cancer, Other Specified Sites

0.000

What This Code Means

Cancer that starts in the nerves of the right leg and hip area. This is a malignant tumor affecting the peripheral nerve tissue in this region.

Coding Tips

•Verify laterality is documented as right; if bilateral involvement exists, code both C47.21 and C47.22
•Distinguish from C47.1 (upper limb) and ensure the site includes hip/lower limb documentation

Clinical Significance

Malignant peripheral nerve sheath tumor of the right lower limb including hip represents the highest specificity for right-sided involvement. The lower extremity is a relatively common site for malignant peripheral nerve sheath tumors, particularly arising from the sciatic nerve, and carries implications for ambulation and quality of life.

Documentation Requirements

✓Right-sided laterality documented in clinical records
✓Pathology confirming malignant peripheral nerve origin
✓Specific nerve and exact location within the right lower limb
✓Surgical details including margins if resected
✓Postoperative functional status and rehabilitation needs

Commonly Confused Codes

C47.20 (Unspecified lower limb) — use C47.21 when right side is documented C47.22 (Left lower limb) — opposite laterality C49.21 (Soft tissue malignancy of right lower limb) — soft tissue, not nerve origin C40.21 (Malignant neoplasm of long bones of right lower limb) — bone tumor, not nerve