Erythrocyte sedimentation rate measured on an automated analyzer, used to track inflammation in infection and arthritis workups.
- 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 3 cited references ↓
- Clinical concern for infection or inflammation
- Diagnosis linked to that concern
- Method recorded as automated
- Analyzer CLIA status if run in office
- How the result will change management, such as aspiration or antibiotics
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 3 cited references ↓
85652 is the automated sed rate. Most hospital and reference labs run ESR this way, so it is the code you will see most often for orthopedic infection workups: the painful total knee, post-op wound concerns, vertebral osteomyelitis, and septic arthritis in a child with a limp.
ESR and CRP are the first-line screen for periprosthetic joint infection, and surgeons order them together before deciding on an aspiration. Bill 85652 once per specimen. Do not bill it with 85651 for the same draw. If the result is repeated the same day for a clinical reason, modifier 91 applies.
Some automated ESR systems are CLIA-waived. Offices with an in-house analyzer should confirm its status and add QW on Medicare claims when it is waived. The diagnosis should show the inflammatory or infectious concern. A routine follow-up after an uncomplicated fracture does not support a sed rate.
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 85652 get rejected.
Source · Editorial brief grounded in CMS NCCI edits, AAOS coding appeals, and cited references ↓
- Billed with 85651 for the same sample
- Missing QW on a waived analyzer
- Diagnosis does not support an inflammation workup
- Same-day repeat without modifier 91
- Duplicate billing with the reference lab
Frequently asked questions
Source · Generated from the editorial pipeline, verified against 3 cited references ↓
01Which ESR code do labs use most?
02What diagnosis supports an ESR for a painful knee replacement?
03Is automated ESR CLIA-waived?
Sources & references
Editorial content was developed using the following public sources.
Mira Scribe
Mira Scribe documents the warning signs that start an infection workup, so the ESR, CRP, and aspiration decision all trace back to the same visit note.
See how Mira captures CPT 85652 documentation