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HCPCS Level II
G
G9821

G9821

No documentation of a chlamydia screening test with proper follow-up

The HCPCS code for no documentation of a chlamydia screening test with proper follow-up is G9821.

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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