ICD-10-CM Q99.81 is the diagnosis code for Usher syndrome. This code falls under the section "Chromosomal abnormalities, not elsewhere classified" within Chapter 17 — Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where Q99.81 sits in the ICD-10-CM classification helps ensure proper coding:
No, Q99.81 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
Q99.81 is the ICD-10-CM diagnosis code for "Usher syndrome". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of Q99.81 is Q99.8 ("Other specified chromosome abnormalities"). Q99.81 provides a more specific classification within this category.
Q99.81 is located in Section Q90-Q99 — "Chromosomal abnormalities, not elsewhere classified" within Chapter 17 of the ICD-10-CM Tabular List.
Q99.81 has 5 sub-code(s) that provide more specific detail: Q99.811, Q99.812, Q99.813, Q99.818, Q99.819.
Use Q99.81 when the patients documented diagnosis matches "Usher syndrome" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Usher syndrome is Q99.81.
No, Q99.81 is non-billable. Use a more specific sub-code for primary diagnosis billing.
Q99.81 is in Chapter 17 of the ICD-10-CM Tabular List.
Yes, Q99.81 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.