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Cyst (colloid) (mucous) (simple) (retention), branchial (cleft)

Cyst (colloid) (mucous) (simple) (retention), branchial (cleft)

Q18.0

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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