Q78.6 ICD-10-CM Code: Multiple congenital exostoses
Q78.6 is the billable ICD-10-CM code for “Multiple congenital exostoses” in the FY 2027 U.S. code set, effective Oct 1, 2026.
Official description
Q78.6Multiple congenital exostoses
ICD-10-CM diagnosis code · United States clinical modification
Where Q78.6 sits
- 1
Chapter 17
Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- 2
Section
Congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
- 3
Category Q78
Other osteochondrodysplasias
- 4
Code Q78.6
Multiple congenital exostoses
Notes for this code
Inclusion terms
- Diaphyseal aclasis
Code first
No “code first” instruction is listed for Q78.6.
Use additional code
No “use additional code” instruction is listed for Q78.6.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for Q78.6.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for Q78.6.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code Q78.6 mean?
Q78.6 is the FY 2027 U.S. ICD-10-CM code for “Multiple congenital exostoses.”
Is Q78.6 a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, Q78.6 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.
Where is Q78.6 located in ICD-10-CM?
Q78.6 is listed in Chapter 17, Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1), within Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) (Q65–Q79), under category Q78, Other osteochondrodysplasias.
What coding notes are listed for Q78.6?
Its listed inclusion terms are Diaphyseal aclasis. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.