C47.9
BillableMalignant neoplasm of peripheral nerves and autonomic nervous system, unspecified
HCC Category Mapping
V28HCC 21 — Breast, Prostate, Colorectal and Other Cancers and Tumors
0.545V24HCC 10 — Lymphoma and Other Cancers
0.675ESRDHCC 10 — Lymphoma and Other Cancers
0.000RxHCCHCC 22 — Cancer, Other Specified Sites
0.000What This Code Means
Cancer of the peripheral nerves or autonomic nervous system when the specific location is not documented or known. This is the least specific code for nerve cancer.
Coding Tips
- •Use only when anatomical site is truly unspecified; query provider for location details
- •This code should rarely be used in modern coding; attempt to obtain site-specific information
Clinical Significance
Malignant neoplasm of peripheral nerves and autonomic nervous system, unspecified is the least specific code in the C47 category. It should be used only when the anatomical site of the peripheral nerve malignancy is truly unknown, and provider queries should be attempted to obtain site-specific information.
Documentation Requirements
- ✓Pathology confirming a malignant peripheral nerve tumor
- ✓Documentation explaining why the anatomical site is unknown
- ✓Evidence that provider query was attempted for site specification
- ✓Current treatment status and disease monitoring plan
- ✓Referral to oncology for further workup if site is unknown
Commonly Confused Codes
C47.0-C47.5 (Site-specific peripheral nerve codes) — always preferred when site is documentedC47.8 (Overlapping sites) — use when multiple known sites are involved, not when site is unknownC47.6 (Trunk, unspecified) — slightly more specific than C47.9 if trunk involvement is knownC80.1 (Malignant neoplasm, unspecified) — most generic cancer code; C47.9 at least specifies nerve origin