Q97.2 – Mosaicism, lines with various numbers of X chromosomes

ICD-10-CM 2027 diagnosis code · Chromosomal abnormalities, not elsewhere classified

Billable code

ICD-10-CM code Q97.2

Code: Q97.2 (claims format: Q972)
Description: Mosaicism, lines with various numbers of X chromosomes
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Block: Q90-Q99 Chromosomal abnormalities, not elsewhere classified
Parent codes: Q97

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Q97 – Other sex chromosome abnormalities, female phenotype, not elsewhere classified

Excludes1 (not coded here):

Turner's syndrome (Q96.-)

Block Q90-Q99

Excludes2 (not included here):

mitochondrial metabolic disorders (E88.4-)

Index terms for Q97.2

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in Q97

Frequently asked questions

What is ICD-10 code Q97.2?

Q97.2 is the ICD-10-CM code for mosaicism, lines with various numbers of X chromosomes, in the block Q90-Q99 (Chromosomal abnormalities, not elsewhere classified).

Is Q97.2 a billable code?

Yes. Q97.2 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Q97.2 belong to?

It belongs to category Q97 – Other sex chromosome abnormalities, female phenotype, not elsewhere classified.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.