Q85: Phakomatoses, not elsewhere classified
Codes under Q85 (Phakomatoses, not elsewhere classified). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.
| Code | Description | Billable |
|---|---|---|
| Q85.0 | Neurofibromatosis (nonmalignant) | — |
| Q85.0 | Neurofibromatosis (nonmalignant) | — |
| Q85.00 | Neurofibromatosis, unspecified | ✓ |
| Q85.00 | Neurofibromatosis, unspecified | ✓ |
| Q85.01 | Neurofibromatosis, type 1 | ✓ |
| Q85.01 | Neurofibromatosis, type 1 | ✓ |
| Q85.1 | Tuberous sclerosis | ✓ |
| Q85.1 | Tuberous sclerosis | ✓ |
| Q85.02 | Neurofibromatosis, type 2 | ✓ |
| Q85.02 | Neurofibromatosis, type 2 | ✓ |
| Q85.03 | Schwannomatosis | ✓ |
| Q85.03 | Schwannomatosis | ✓ |
| Q85.8 | Other phakomatoses, not elsewhere classified | — |
| Q85.8 | Other phakomatoses, not elsewhere classified | — |
| Q85.09 | Other neurofibromatosis | ✓ |
| Q85.09 | Other neurofibromatosis | ✓ |
| Q85.9 | Phakomatosis, unspecified | ✓ |
| Q85.9 | Phakomatosis, unspecified | ✓ |
| Q85.81 | PTEN hamartoma tumor syndrome | ✓ |
| Q85.81 | PTEN hamartoma tumor syndrome | ✓ |
| Q85.82 | Other Cowden syndrome | ✓ |
| Q85.82 | Other Cowden syndrome | ✓ |
| Q85.83 | Von Hippel-Lindau syndrome | ✓ |
| Q85.83 | Von Hippel-Lindau syndrome | ✓ |
| Q85.89 | Other phakomatoses, not elsewhere classified | ✓ |
| Q85.89 | Other phakomatoses, not elsewhere classified | ✓ |
Frequently asked questions
What is ICD-10-CM code Q85?
Q85 is an ICD-10-CM category covering Phakomatoses, not elsewhere classified. It contains 26 more specific diagnosis codes, 22 of which are billable.
Is Q85 a billable code?
No — Q85 is a category header and isn't billable on its own. Code to the highest level of specificity using one of its subcodes (for example Q85.0 — Neurofibromatosis (nonmalignant)). 22 of the 26 codes under Q85 are billable.
What codes fall under Q85?
Q85 includes Q85.0, Q85.0, Q85.00, Q85.00, Q85.01, plus 21 more. See the full list with descriptions and billable status above.
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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.
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