ICD-10-CM Diagnosis Code (2025)
Official Description for Q91
Trisomy 18 and Trisomy 13
Child Codes (More Specific Codes for Q91):
Q91.0 - Trisomy 18, nonmosaicism (meiotic nondisjunction)
Q91.1 - Trisomy 18, mosaicism (mitotic nondisjunction)
Q91.2 - Trisomy 18, translocation
Q91.3 - Trisomy 18, unspecified
Q91.4 - Trisomy 13, nonmosaicism (meiotic nondisjunction)
Q91.5 - Trisomy 13, mosaicism (mitotic nondisjunction)
Q91.6 - Trisomy 13, translocation
Q91.7 - Trisomy 13, unspecified
About ICD-10-CM Code Q91 (Trisomy 18 and Trisomy 13)
ICD-10-CM code Q91 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 Q91 became effective on October 1, 2024.
This page provides detailed information about Q91 - Trisomy 18 and Trisomy 13. 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 Trisomy 18 and Trisomy 13.