Urinalysis using an automated analyzer that includes microscopic examination of the urine, along with the standard chemical dipstick results.
- Medicare
- $0.00
- Work RVU
- 0
- Global, days
- Region
- General
Documentation requirements
What must appear in the operative or office note to support the claim.
Source · Editorial brief grounded in 2 cited references ↓
- Clinical reason, such as urinary symptoms, post-op fever, or pre-op workup tied to a planned implant
- Specimen collection method and date
- Both chemical and microscopic results
- CLIA certificate appropriate for non-waived testing if done in-office
- Provider review and any treatment decision
Applicable modifiers
Modifiers commonly billed with this code.
Source · AMA CPT modifier descriptors · CMS NCCI Policy Manual
What this code covers
Source · Editorial summary grounded in 2 cited references ↓
Orthopedic practices order automated urinalysis with microscopy most often before total joint replacement, and when a post-op patient develops fever, confusion, or new urinary symptoms. Some surgeons still order it as routine pre-op screening, though evidence and payer policy have moved away from treating asymptomatic bacteriuria before arthroplasty.
It is paid under the Clinical Laboratory Fee Schedule. Most practices send it out. If you run it in-house, a waived CLIA certificate does not cover it, because the microscopic exam is not a waived test. Practices with only a waived certificate should look at the non-microscopic dipstick codes instead.
Do not bill 81001 together with other urinalysis codes for the same specimen. If a culture is also sent, that is a separate microbiology code. Diagnosis coding should reflect symptoms or the planned procedure, since a routine screening diagnosis alone gets denied by many payers.
RVU & reimbursement
Component RVUs and Medicare national rate. Actual payment varies by GPCI locality.
Source · CMS Physician Fee Schedule, RVU26A · January 2026
| Work RVU | 0 |
| Practice expense RVU | 0 |
| Malpractice RVU | 0 |
| Total RVU | 0 |
| Medicare national rate | $0.00 |
| Global period | days |
Payment by site of service
Medicare pays different rates by setting. HOPD typically pays substantially more than ASC for the same procedure.
Source · CMS OPPS Addendum B·ASC HCPCS payment rates·2026
| Setting | Medicare rate (national) |
|---|---|
Office (PFS non-facility) Procedure performed in physician's office | $0.00 |
Common denial reasons
The recurring reasons claims for CPT 81001 get rejected.
Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓
- Billed with another urinalysis code for the same specimen
- Screening-only diagnosis
- Billed under a CLIA-waived certificate
- No microscopy result documented
- Duplicate billing by both practice and outside lab
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 2 cited references ↓
01Is urinalysis covered before a hip or knee replacement?
02Can a CLIA-waived lab bill 81001?
03Can 81001 be billed with a urine culture?
Sources & references
Editorial content was developed using the following public sources.
- 01CMS Physician Fee Schedule 2026
- 02cms.govhttps://www.cms.gov/medicare/payment/fee-schedules/clinical-laboratory-fee-schedule-clfs
Mira Scribe
Mira Scribe records urinary symptoms or post-op fever in the note, giving the urinalysis a clinical reason instead of a routine screening code.
See how Mira captures CPT 81001 documentation