Q91

The ICD-10-CM code for trisomy 18 and trisomy 13 is Q91. The full clinical description is "Trisomy 18 and Trisomy 13". Q91 is a non-billable header code. Use a more specific child code for billing purposes.

ICD-10-CM code Q91 represents “Trisomy 18 and Trisomy 13”. It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a non-billable header code. Use a more specific child code for billing purposes.

No, Q91 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 8 child codes under Q91.

Q91 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).

Q91 has 8 child codes, including: Q91.0 (Trisomy 18, nonmosaicism (meiotic nondisjunction)), Q91.1 (Trisomy 18, mosaicism (mitotic nondisjunction)), Q91.2 (Trisomy 18, translocation), Q91.3 (Trisomy 18, unspecified), and 4 more.

Q91 is linked to 1 UMLS Concept Unique Identifier: C2910353. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like trisomy 18 and trisomy 13 affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.

Q91 maps to the ICD-11 code: LD40.Z (Complete trisomies of the autosomes, unspecified).