H66
Suppurative and unspecified otitis media
H66 is a non-billable ICD-10-CM code category for suppurative and unspecified otitis media. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are H66.0 Acute suppurative otitis media, H66.1 Chronic tubotympanic suppurative otitis media, H66.2 Chronic atticoantral suppurative otitis media, H66.3 Other chronic suppurative otitis media and 2 more. Its coding notes include a Use additional code instruction and 8 Excludes2 entries.
Use additional code
Add the listed code as a secondary code, if known.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (8 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Includes
Further defines or gives examples of the content of the category.
- suppurative and unspecified otitis media with myringitis
Notes
Also from chapter/block level (1 note)
- Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition