G0659 Drug test(s), definitive, utilizing drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including but not limited to gc/ms (any type, single or tandem) and lc/ms (any type, single or tandem), excluding immunoassays (e.g., ia, eia, elisa, emit, fpia) and enzymatic methods (e.g., alcohol dehydrogenase), performed without method or drug-specific calibration, without matrix-matched quality control material, or without use of stable isotope or other universally recognized internal standard(s) for each drug, drug metabolite or drug class per specimen; qualitative or quantitative, all sources, includes specimen validity testing, per day, any number of drug classes
Short descriptor: Drug test def simple all cl
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G0659 is the HCPCS Level II code for Drug test(s), definitive, utilizing drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including but not limited to gc/ms (any type, single or tandem) and lc/ms (any type, single or tandem), excluding immunoassays (e.g., ia, eia, elisa, emit, fpia) and enzymatic methods (e.g., alcohol dehydrogenase), performed without method or drug-specific calibration, without matrix-matched quality control material, or without use of stable isotope or other universally recognized internal standard(s) for each drug, drug metabolite or drug class per specimen; qualitative or quantitative, all sources, includes specimen validity testing, per day, any number of drug classes (2026). It belongs to Section G — Procedures / Professional Services (Temporary). Under Medicare, its coverage status is: Carrier judgment. Part B pricing methodology: Priced subject to national limitation amount (clinical lab).
Classification & CMS Attributes
- Medicare Coverage
- Carrier judgment (code C)
- Part B Pricing
- Priced subject to national limitation amount (clinical lab) (indicator 21)
- Type of Service
- Diagnostic laboratory
- Effective Date
- 2017-01-01
- 2026 Maintenance
- No change this year
References
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Reference G0659 with the canonical source and edition:
G0659 — Drug test(s), definitive, utilizing drug identification methods able to identify individual drugs and distinguish between structural isomers (but not necessarily stereoisomers), including but not limited to gc/ms (any type, single or tandem) and lc/ms (any type, single or tandem), excluding immunoassays (e.g., ia, eia, elisa, emit, fpia) and enzymatic methods (e.g., alcohol dehydrogenase), performed without method or drug-specific calibration, without matrix-matched quality control material, or without use of stable isotope or other universally recognized internal standard(s) for each drug, drug metabolite or drug class per specimen; qualitative or quantitative, all sources, includes specimen validity testing, per day, any number of drug classes. ICD-10 Coding Pro (HCPCS Level II 2026). https://icd10codingpro.com/hcpcs-codes/G0659
Canonical URL: https://icd10codingpro.com/hcpcs-codes/G0659