Question 1

Is Q91 a billable ICD-10 code?

Accepted Answer

No, Q91 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code Q91 mean?

Accepted Answer

ICD-10-CM code Q91 represents Trisomy 18 and Trisomy 13. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code Q91 introduced?

Accepted Answer

Code Q91 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code Q91?

Accepted Answer

The parent category for Q91 is section:Q90-Q99 (Chromosomal abnormalities, not elsewhere classified (Q90-Q99)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Q912026

Excludes22Not included here

Notes1Additional information

Excluded By1Codes that exclude this one

Is Q91 a billable ICD-10 code?

What does ICD-10 code Q91 mean?

When was ICD-10 code Q91 introduced?

What is the parent category for ICD-10 code Q91?