Q87.88

CTNNB1 syndrome

Billable code

This code does not map to a risk-adjusting HCC in the loaded models.

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

This code · Q87.88
Use additional

code, if applicable, for associated conditions such as: cerebral palsy (G80.-) congenital heart malformations (Q20.0-Q24.9) developmental disorder of speech and language (F80.-) exudative retinopathy (H35.02-) intellectual disability (F70-F79) microcephaly (Q02)

Inherited from Q87.8Oth congenital malformation syndromes, NEC
Excludes 1

Zellweger syndrome (E71.510)

Inherited from Q87Oth congenital malform syndromes affecting multiple systems
Use additional

code(s) to identify all associated manifestations

Inherited from chapter 17Congenital malformations, deformations and chromosomal abnormalities
Excludes 2

inborn errors of metabolism (E70-E88)

Note

Codes from this chapter are not for use on maternal records

Official Guidelines for Q87.88

FY 2026 ›
I.C.17Chapter-specific guidanceChapter 17: Congenital malformations, deformations, and chromosomal abnormalities (Q00-QA1)

Sections that reference Q87.88

Sections whose FY 2026 text names Q87.88, its Q87 category, or a range containing it — the chapter guidance above is the authoritative source.

Find Q87.88 in the alphabetic index

1 index path leads to this code