Q99.819 – Usher syndrome, unspecified
ICD-10-CM 2027 diagnosis code · Chromosomal abnormalities, not elsewhere classified
ICD-10-CM code
Q99.819
- Code
Q99.819(claims format:Q99819)- Description
- Usher syndrome, unspecified
- 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
- Q99 › Q99.8 › Q99.81
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Q99.81 – Usher syndrome
Use additional code:
- code to identify any auditory and visual manifestations
Block Q90-Q99
Excludes2 (not included here):
- mitochondrial metabolic disorders (E88.4-)
Index terms for Q99.819
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in Q99.81
- Q99.811 – Usher syndrome, type 1Billable
- Q99.812 – Usher syndrome, type 2Billable
- Q99.813 – Usher syndrome, type 3Billable
- Q99.818 – Other Usher syndromeBillable
Frequently asked questions
What is ICD-10 code Q99.819?
Q99.819 is the ICD-10-CM code for usher syndrome, unspecified, in the block Q90-Q99 (Chromosomal abnormalities, not elsewhere classified).
Is Q99.819 a billable code?
Yes. Q99.819 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does Q99.819 belong to?
It belongs to category Q99 – Other chromosome abnormalities, 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.