ICD-10 Guide

Q99.9

Name: ICD-10-CM Medical Diagnosis Codes
Creator: Centers for Medicare & Medicaid Services
License: https://www.cms.gov/medicare/coding/icd10

Billable

Chromosomal abnormality, unspecified

BILLABLE STATUSYes

IMPLEMENTATION DATEOctober 1, 2015

LAST UPDATED08/26/2025

Code Description

ICD-10 Q99.9 is a billable code used to indicate a diagnosis of chromosomal abnormality, unspecified.

Key Diagnostic Point:

Chromosomal abnormality, unspecified

Q99.9

Code Description

Key Diagnostic Point:

Related ICD-10 Codes

Q99.9

Code Description

Key Diagnostic Point:

Related ICD-10 Codes