Q85.09

Billable

Other neurofibromatosis

HCC Category Mapping

V28HCC 23 — Melanoma and Other Skin Cancers

0.251

V24HCC 12 — Breast, Prostate, and Other Cancers and Tumors

0.150

ESRDHCC 12 — Breast, Prostate, and Other Cancers and Tumors

0.000

What This Code Means

Other types of neurofibromatosis not classified as type 1, type 2, or schwannomatosis.

Coding Tips

•Use this code only when a neurofibromatosis variant is documented but doesn't fit Q85.01, Q85.02, or Q85.03
•Ensure the medical record clearly describes the specific neurofibromatosis variant

Clinical Significance

This code captures rare variants of neurofibromatosis that don't fit the classic NF1, NF2, or schwannomatosis categories but still represent significant genetic tumor predisposition syndromes requiring specialized care. These variants may have unique presentations requiring individualized management approaches and genetic counseling.

Documentation Requirements

✓Specific variant of neurofibromatosis documented
✓Clinical features not meeting NF1, NF2, or schwannomatosis criteria
✓Genetic testing results when available
✓Family history and inheritance pattern
✓Associated tumor types and locations
✓Reason other NF codes don't apply
✓Surveillance and management protocols

Commonly Confused Codes

Q85.01-Q85.03 — Major NF types when criteria are actually met Q85.00 — Unspecified NF when specific variant is documented Q87.89 — Other congenital malformation syndromes D36.10 — Individual nerve tumors without syndrome