P2029 HCPCS code: Congo red, blood
P2029 is the HCPCS Level II code for congo red, blood. Its Medicare coverage code is D (Special coverage instructions apply): Medicare covers it when its national or local coverage criteria are met. The NCCI unit limit is 1 per day on outpatient hospital claims.
Code details
| Field | Value |
|---|---|
| Section | P codes — Pathology and laboratory services |
| Coverage code | D — Special coverage instructions apply |
| Pricing indicator | 57 |
| BETOS category | T1H |
| Added | 1986-01-01 |
| Last action effective | 1990-01-01 |
NCCI unit limits (MUE)
| Claim type | Max units per day | Rationale |
|---|---|---|
| outpatient hospital claims | 1 | CMS Policy |
| practitioner claims | 1 | CMS Policy |
What changed for P2029
- 1986-01-01: P2029 added to HCPCS Level II
- Next scheduled CMS quarterly update (HCPCS and DMEPOS fee schedule): 2027-01-01
Frequently asked questions
What is HCPCS code P2029?
P2029 is the HCPCS Level II code for congo red, blood. Short descriptor: "Congo red blood test".
Does Medicare cover P2029?
Coverage code D — Special coverage instructions apply. Medicare covers it when its national or local coverage criteria are met.
How many units of P2029 can be billed per day?
1 on outpatient hospital claims; 1 on practitioner claims (NCCI medically unlikely edits).
Related P20 codes
- P2028 — Cephalin floculation, blood
- P2031 — Hair analysis (excluding arsenic)
- P2033 — Thymol turbidity, blood
- P2038 — Mucoprotein, blood (seromucoid) (medical necessity procedure)
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Next steps
- Run a reimbursement report for a device billed under P2029
- Watch P2029 for fee, coverage and descriptor changes
- Build a full Medicare revenue model for P2029
Sources: CMS HCPCS Level II release October 2025; CMS DMEPOS fee schedule; CMS NCCI MUE tables; CMS Medicare utilization (physician and DME supplier files); CMS Medicare Coverage Database articles. Fees are Medicare allowables, not commercial rates. Not billing or legal advice.