Q85.8Header code — not billable
Other phakomatoses, not elsewhere classified
- Chapter
- 17. Congenital malformations, deformations and chromosomal abnormalities
- Category
- Q85
- Effective date
- October 1, 2026
Related codes in category Q85
Q85Phakomatoses, not elsewhere classifiedQ85.0Neurofibromatosis (nonmalignant)Q85.00Neurofibromatosis, unspecifiedYesQ85.01Neurofibromatosis, type 1YesQ85.02Neurofibromatosis, type 2YesQ85.03SchwannomatosisYesQ85.09Other neurofibromatosisYesQ85.1Tuberous sclerosisYesQ85.81PTEN hamartoma tumor syndromeYesQ85.82Other Cowden syndromeYesQ85.83Von Hippel-Lindau syndromeYesQ85.89Other phakomatoses, not elsewhere classifiedYes
Frequently asked questions
What is ICD-10 code Q85.8?
Q85.8 is an ICD-10-CM diagnosis code for Other phakomatoses, not elsewhere classified.
Is Q85.8 a billable code?
No. Q85.8 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is Q85.8 in?
Q85.8 falls under Chapter 17: Congenital malformations, deformations and chromosomal abnormalities.
When did Q85.8 become effective?
Q85.8 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to Q85.8?
Q85.8 belongs to category Q85, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.