All ICD10 Codes

Q85

Non-Billable
ChapterQ00–Q99
Rankcategory
Official Description

Phakomatoses, not elsewhere classified

Use a more specific code (2 billable, 2 non-billable)
Q85.0Neurofibromatosis (nonmalignant)has subcodesQ85.1Tuberous sclerosisQ85.8Other phakomatoses, not elsewhere classifiedhas subcodesQ85.9Phakomatosis, unspecified
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

CH17 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • ataxia telangiectasia [Louis-Bar] (G11.3)
  • familial dysautonomia [Riley-Day] (G90.1)

Clinical Hierarchy

BillableHas subcodes
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q80-Q89Other congenital malformations (Q80-Q89)
Q85Phakomatoses, not elsewhere classifiedNot billable
Q85.0Neurofibromatosis (nonmalignant)Subcodes
Q85.1Tuberous sclerosisBillable
Q85.8Other phakomatoses, not elsewhere classifiedSubcodes
Q85.9Phakomatosis, unspecifiedBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q85:

chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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