ICD-10 Code Q42.3 - Congenital absence, atresia and stenosis of anus without fistula

ICD-10-CM Diagnosis Code Q42.3

Diagnosis Code: Q42.3 (Raw: Q423)

Description: Congenital absence, atresia and stenosis of anus without fistula

Classification: International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM)

Fiscal Year: 2026

CMS Section 111 Status: Valid for reporting.

Overview & Clinical Details

ICD-10-CM code Q42.3 is designated for Congenital absence, atresia and stenosis of anus without fistula. In medical documentation and insurance billing, this code is utilized to specify medical diagnosis for patient records, reimbursement workflows, and compliance under CMS Section 111 mandatory insurer reporting guidelines.