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HCPCS Level II
G
G9959

G9959

Systemic antimicrobials not prescribed

The HCPCS code for systemic antimicrobials not prescribed is G9959.

Source: official CMS Alpha-Numeric HCPCS file (Level II only). Informational only — verify against current CMS/payer sources before use in billing.

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

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