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Disease, diseased, persistent mucosal (middle ear)

Disease, diseased, persistent mucosal (middle ear)

H66.20
leftH66.22
left, with rightH66.23
rightH66.21
right, with leftH66.23

Source: official CMS/NCHS ICD-10-CM Index to Diseases and Injuries. Informational only.

Data current as of FY2026 CMS/NCHS release. Not affiliated with or endorsed by CMS, HHS, or NCHS.

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