Non-Billable / Non-Specific Code
ICD-10-CM H66 is the diagnosis code for Suppurative and unspecified otitis media. This code falls under the section "Diseases of middle ear and mastoid" within Chapter 8 — Diseases of the ear and mastoid process (H60-H95). 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 H66 sits in the ICD-10-CM classification helps ensure proper coding:
No, H66 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
H66 is the ICD-10-CM diagnosis code for "Suppurative and unspecified otitis media". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
H66 is located in Section H65-H75 — "Diseases of middle ear and mastoid" within Chapter 8 of the ICD-10-CM Tabular List.
H66 has 6 sub-code(s) that provide more specific detail: H66.0, H66.1, H66.2, H66.3, H66.4 and more.
Use H66 when the patients documented diagnosis matches "Suppurative and unspecified otitis media" 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 Suppurative and unspecified otitis media is H66.
No, H66 is non-billable. Use a more specific sub-code for primary diagnosis billing.
H66 is in Chapter 8 of the ICD-10-CM Tabular List.
Yes, H66 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.