P2031 — Hair analysis (excluding arsenic)
P2031 is a HCPCS Level II code for hair analysis (excluding arsenic). It belongs to the Pathology and Laboratory Services section. Medicare does not pay it — see the coverage note below before you bill it.
Medicare coverage: Non-covered by Medicare
Medicare does not cover the item or service this code describes.
From the coverage field of the CMS Alpha-Numeric HCPCS File, release 2026Q3-Jul. This states Medicare’s position on the code, not on your particular claim.
Physician fee schedule statusN
Non-covered service. Medicare does not cover it.
Global period: XXX
Want the dollar amount for your locality? The fee calculator applies your GPCI and the current conversion factor.
Medically Unlikely Edits — units per day
The most units of P2031 Medicare will pay on one date of service. Bill more on a single line and it is denied. The limit is not the same in every setting, so the row that matters is the one matching the claim you are building.
- practitioner
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
- outpatient
- 0 — never payable MAI 3 — Date of Service Edit: Clinical · CMS Policy
The adjudication indicator decides whether exceeding the limit is worth appealing at all: MAI 1 is a line edit you can support with documentation, MAI 3 is a date-of-service edit that is also appealable, and MAI 2 is absolute — no documentation overrides it. CMS MUE 2026Q3.
The CMS record for P2031
- Long descriptor
- Hair analysis (excluding arsenic)
- Short descriptor
- Hair analysis
- Added
- January 1, 1986
- BETOS
- T1H
- Pricing indicator
- 00 — Not priced by Part B
The official wording. This is what the code means.
CMS's 28-character form, which is what shows up on a remittance advice.
When CMS introduced the code.
Berenson-Eggers Type of Service — CMS's own analytic grouping.
Service not separately priced by Part B — not covered, bundled into another service, or used by Part A only.
Codes adjacent to P2031
HCPCS has no hierarchy — related items simply sit next to each other in the numbering. If P2031 is not quite right, the correct code is very often within a few positions of it.
- M1498Diagnostic radiology mips value pathway
- M1499Interventional radiology mips value pathway
- M1500Neuropsychology mips value pathway
- M1501Pathology mips value pathway
- M1502Podiatry mips value pathway
- M1503Vascular surgery mips value pathway
- P2028Cephalin floculation, blood
- P2029Congo red, blood
- P2033Thymol turbidity, blood
- P2038Mucoprotein, blood (seromucoid) (medical necessity procedure)
- P3000Screening papanicolaou smear, cervical or vaginal, up to three smears, by technician under physician supervision
- P3001Screening papanicolaou smear, cervical or vaginal, up to three smears, requiring interpretation by physician
- P7001Culture, bacterial, urine; quantitative, sensitivity study
- P9010Blood (whole), for transfusion, per unit
- P9011Blood, split unit
- P9012Cryoprecipitate, each unit
Questions about P2031
What is HCPCS code P2031?
P2031 is a HCPCS Level II code for hair analysis (excluding arsenic). It sits in the Pathology and Laboratory Services section.
Does Medicare cover P2031?
The CMS HCPCS file marks P2031 as "Non-covered by Medicare". Medicare does not cover the item or service this code describes.
How is P2031 paid under the physician fee schedule?
P2031 carries PFS status code N. Non-covered service. Medicare does not cover it.