Q99.8 - Other specified chromosome abnormalities
- Applicable to Other specified chromosome abnormalities
- The 2026 edition of ICD10-CM Q99.8 became effective on October 1, 2025.
- This is the American ICD10-CM version of Q99.8 - other international versions of ICD10 Q99.8 may differ.
- Q99.8 is a Non-Billable / Non-Specific ICD10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- Q99.8 Code should not be used for billing or reimbursement purposes as there are multiple ICD-10 CM codes below it that contain a greater level of detail.
- Q99.8 - Other specified chromosome abnormalities
- Q99.8 - Other specified chromosome abnormalities
- Q99.81 - Usher syndrome
- Q99.811 - Usher syndrome, type 1
- Q99.812 - Usher syndrome, type 2
- Q99.813 - Usher syndrome, type 3
- Q99.818 - Other Usher syndrome
- Q99.819 - Usher syndrome, unspecified
- Q99.89 - Other specified chromosome abnormalities
The following codes above Q99.8 contain annotation back-references that may be applicable to Q99.8:
Chapter: Q00-QA0 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders
Section: Q90-Q99 Chromosomal abnormalities, not elsewhere classified
Category: Q99 Other chromosome abnormalities, not elsewhere classified
Non-Billable/Non-Specific Code
Browse other similar CM codes
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
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