ICD-10-CM Q89.4: Conjoined twins

ICD-10-CM Diagnosis Code (2025)

Official Description for Q89.4

Conjoined twins

Coding Notes & Guidelines for Q89.4

Inclusion Terms
  • Craniopagus
  • Dicephaly
  • Pygopagus
  • Thoracopagus

Parent Code (Less Specific):

Q89 - Other congenital malformations, not elsewhere classified

About ICD-10-CM Code Q89.4 (Conjoined twins)

ICD-10-CM code Q89.4 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Q89.4 became effective on October 1, 2024.

This page provides detailed information about Q89.4 - Conjoined twins. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Conjoined twins.