ICD-10-CM
ICD-10 code for Enchondromatosis: Q78.4
The closest CDC title for "Enchondromatosis" is Q78.4, Enchondromatosis. Q78.4 is a billable code.
Source: CDC ICD-10-CM FY2027 order file dated June 16, 2026. Publisher page
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Codes under Q78, then other CDC titles that name enchondromatosis
A header groups codes and is not billed. A billable code is one you can report.
- Q78Other osteochondrodysplasiasHeader
- Q78.0Osteogenesis imperfectaBillable
- Q78.1Polyostotic fibrous dysplasiaBillable
- Q78.2OsteopetrosisBillable
- Q78.3Progressive diaphyseal dysplasiaBillable
- Q78.4EnchondromatosisBillable
- Q78.5Metaphyseal dysplasiaBillable
- Q78.6Multiple congenital exostosesBillable
- Q78.8Other specified osteochondrodysplasiasBillable
- Q78.9Osteochondrodysplasia, unspecifiedBillable
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From Q78. A note on a category applies to every code under it.
Related conditions
Related pages
- Q78.4 code detailsNotes, nearby codes, CMS-HCC group
- Category Q78Every code under it
- Chapter 17Congenital malformations and chromosomal abnormalities
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Enchondromatosis?
The closest CDC title for "Enchondromatosis" is Q78.4, Enchondromatosis. Q78.4 is a billable code.
Is Q78.4 billable?
Yes. Q78.4 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to Q78.4?
The CDC tabular list gives 1 Excludes2 note (may be coded together when both are documented) for Q78.4 and the categories above it. They are listed on this page.
What chapter is Q78.4 in?
Chapter 17. Congenital malformations and chromosomal abnormalities.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.