2026 ICD-10-CM Diagnosis Code Q35Cleft palate

ICD-10-CM Codes›Q00-Q99›Q35-Q37›Q35

ICD-10-CM Q35
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q35 is a non-billable ICD-10-CM category code for cleft palate, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Q35.1, Q35.3, Q35.5, and Q35.7.

Code Identity

ICD-10-CM Code
Q35
Billable Status
No — Non-Billable Category
Code Describes
Cleft palate
Chapter
Q35-Q37
Cleft lip and cleft palate

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ35-Q37Cleft lip and cleft palate
CategoryQ35Cleft palate
This CodeQ35Cleft palate

Specific Coding for Cleft palateOverview

Non-specific codes like Q35 require more characters. Use one of these billable codes instead:

  • Use Q35.1 for Cleft hard palate

  • Use Q35.3 for Cleft soft palate

  • Use Q35.5 for Cleft hard palate with cleft soft palate

  • Use Q35.7 for Cleft uvula

  • Use Q35.9 for Cleft palate, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • fissure of palate
  • palatoschisis

Type 1 Excludes

  • cleft palate with cleft lip Q37

Clinical InformationClinical

  • Cleft Palate

    congenital fissure of the soft and/or hard palate, due to faulty fusion.

  • Palatal Obturators

    appliances that close a cleft or fissure of the palate.

  • Cleft Palate

    a congenital abnormality consisting of a fissure in the midline of the hard and/or soft palate; it is the result of the failure of the two sides of the palate to fuse during embryonic development.

  • Palatorrhaphy|Cleft Palate Repair|Cleft palate repair

    the surgical repair of a cleft palate by approximation of the intact tissues surrounding the defect.

  • TBX22 wt Allele|ABERS|CLPA|CPX|Cleft Palate and/or Ankyloglossia Gene|T-Box 22 wt Allele|TBXX|dJ795G23.1

    human tbx22 wild-type allele is located in the vicinity of xq21.1 and is approximately 21 kb in length. this allele, which encodes t-box transcription factor tbx22 protein, plays a role in palate development. mutation of the gene is associated with x-linked cleft palate and ankyloglossia.

Patient EducationClinical

Cleft Lip and Palate

Cleft lip and cleft palate are birth defects that occur when a baby's lip or mouth do not form properly. They happen early during pregnancy. A baby can have a cleft lip, a cleft palate, or both.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q35Overview

Is Q35 (Cleft palate) a billable code?

No. This is a category header that groups the codes for cleft palate, and headers cannot be submitted on claims. Claims for cleft palate need a more specific code from this category, such as Q35.1, Q35.3, and Q35.5.