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Describe a service in plain words, or type a CPT/HCPCS code.

Lactate Dehydrogenase (LDH) Blood Test

CPT 83615

Ordered to assess tissue damage or red-cell destruction, and to monitor certain cancers and their response to treatment.

No national payment amount

Status X is not separately payable under the PFS.

Did Medicare pay separately for CPT 83615 in Q3 2024? Copy link

Not at a published national rate. CPT 83615 carries status X (statutory exclusion) in the Q3 2024 release. The statutory definition of physician services does not include this item. Treat the blank amount as unpriced, not as $0.

Source: Physician relative value file (Q3 2024) · effective July 2024 · materially updated Aug 4, 2026 · compact facts

Can you bill it with another code? Copy link

Enter a second CPT or HCPCS code billed the same date of service to check the current NCCI procedure-to-procedure edit between it and 83615.

See every current NCCI pair for 83615 →

How often 83615 is billed Copy link

Across Original Medicare in CY2024, 83615 ranked #268 of the 7,879 CPT codes billed to Medicare that year, ranked by patients served or total allowed dollars. Patients who received it in 2024 were billed for it an average of 2.3 times that year — more than once per patient.

Beneficiaries
576,800
Office + facility patients combined
Services
1.3M
Times it was billed
Allowed
$7.7M
Total Medicare allowed dollars
Compare: ↑ #267 more popular · 33533 ↓ #269 less popular · 00812

2024 Medicare fee-for-service only, national totals — Medicare Advantage, Medicaid and commercial volume are excluded, so real-world use runs higher. This is a calendar-year snapshot from the CMS Physician & Other Practitioners dataset, on a different cycle from the Q3 2024 fee schedule the rates above come from.

Global period: what 83615's fee already covers Copy link

XXX Does not apply

The global surgery concept does not apply to this code.

Modifiers that report work outside 83615's global period
Modifier Reports
-25 A significant, separately identifiable E/M on the same day as the procedure, beyond its usual pre- and post-operative care.

A modifier reports what happened; it does not by itself make a service payable. Documentation has to support it.

Common questions Copy link

Why is there no payment amount for 83615?

Its status indicator is X (statutory exclusion). The statutory definition of physician services does not include this item. The blank is deliberate: the amount is either unknown or paid under another provision, so reading it as $0 would be wrong.

Why would a Medicare claim for 83615 be denied or paid less?

Each item below comes from a CMS indicator on this page — not general billing advice.

  • Its status indicator is X (statutory exclusion) — The statutory definition of physician services does not include this item. See status indicators

Payer-specific coverage and documentation rules live outside these files, so a claim that clears every check here can still be denied on other grounds.

When does this rate change?

CMS publishes a fee schedule release every quarter (January, April, July, October), and each is versioned here. See what changed each release, or get an email when a new release moves rates.

Sources: CMS Medicare Physician Fee Schedule Relative Value Files.

Saw this code on your bill? Copy link

For patients
What does CPT code 83615 mean?

CPT code 83615: Lactate Dehydrogenase (LDH) Blood Test. A common example is someone in treatment for lymphoma whose oncologist tracks this value visit to visit as one signal of whether the disease is responding. It also shows up in anemia work-ups, where a high level suggests red cells are being broken apart rather than simply not being made.

Computation & policy
History & related

Rate history by release Copy link

National non-facility amount for 83615 across quarterly releases.

Release Status Non-facility Facility
Q3 2026 Jul 1, 2026 – present X — —
Q2 2026 Apr 1, 2026 – Jun 30, 2026 X — —
Q1 2026 Jan 1, 2026 – Mar 31, 2026 X — —

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Source & method

Show sources

This is computed from CMS's Medicare Physician Fee Schedule Q3 2024 release (schedule pfs, effective July 2024). National amounts apply a GPCI of 1.000 and leave sequestration off. The status indicator decides payability, never the RVU values, so a blank RVU stays blank. Releases are immutable: a rate retrieved for a past quarter always reflects that release. Commercial and cash-pay figures anywhere on this page are arithmetic on the Medicare amount, using commonly cited reimbursement ranges. They're illustrative, and no nationwide claims database stands behind them. Our methodology covers all of this in depth — sourcing, parsing, versioning, and how claims are cross-checked before they ship.

Description written from primary sources: CMS Medicare Physician Fee Schedule Relative Value Files. Not derived from AMA CPT descriptor text.

Physician relative value file (Q3 2024) · rvu24c-updated-09-09-2024.zip (PPRRVU24_JUL.csv row 15,837)

Use the (i) buttons next to each amount above for the exact row, columns, and math.

Cite this rate

This link keeps pointing at the Q3 2024 figures, even after a newer release lands.

CPT 83615 Medicare Physician Fee Schedule rate (Q3 2024). Localis. https://localishealth.com/cpt/83615/2024/C