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

Total Protein, Blood

CPT 84155

Ordered as part of routine metabolic panels, or to investigate abnormal albumin, chronic liver or kidney disease, or a suspected plasma-cell disorder.

No national payment amount

Status X is not separately payable under the PFS.

Did Medicare pay separately for CPT 84155 in Q1 2016?

Not at a published national rate. CPT 84155 carries status X (statutory exclusion) in the Q1 2016 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 (Q1 2016) · effective January 2016 · materially updated Aug 4, 2026 · compact facts

How often 84155 is billed

Across Original Medicare in CY2024, 84155 ranked #322 of the 7,879 CPT codes billed to Medicare that year, ranked by patients served or total allowed dollars.

Beneficiaries
472,608
Office + facility patients combined
Services
655,037
Times it was billed
Allowed
$2.3M
Total Medicare allowed dollars
Compare: ↑ #321 more popular · 84450 ↓ #323 less popular · 76937

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 Q1 2016 fee schedule the rates above come from.

Common questions

Why is there no payment amount for 84155?

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 84155 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?

What is a 84155 visit in patient-friendly terms?

In plain terms: Measures the total concentration of protein in a blood sample - overwhelmingly albumin plus the various globulins - run on a chemistry analyzer rather than estimated with a refractometer, and drawn from blood rather than urine or another body fluid. It is a standard line on comprehensive metabolic testing. Taken alone it is a blunt instrument; its usefulness comes from reading it next to albumin, because the gap between the two indicates whether the globulin fraction is raised, as it can be in chronic inflammation, liver disease, or plasma-cell disorders such as myeloma. Think of the standard blood panel drawn at an annual visit, where this is one of a dozen values reported. It becomes interesting when total protein is high but albumin is normal or low, which can be the first clue that prompts a doctor to look further at the immune proteins. You'll typically see CPT 84155 on a bill or explanation of benefits (EOB) when a clinician performs or bills for this service.

Computation & policy

How this amount is computed

amount = (work RVU × work GPCI + PE RVU × PE GPCI + MP RVU × MP GPCI) × conversion factor. National amounts use GPCI = 1.000. To price an RVU figure of your own, use the RVU-to-dollars converter.

Release Q1 2016
Component RVU
Work RVU blank
Practice expense RVU (non-facility) blank
Practice expense RVU (facility) blank
Malpractice RVU blank

Every rate combines three parts: work (the clinician’s time, skill and effort), practice expense (office overhead — higher when the service is done in a doctor’s own office), and malpractice (the share of liability-insurance cost). A blank means CMS publishes no national number for that part. Read it as unknown, and never as zero.

History & related

Rate history by release

National non-facility amount for 84155 across quarterly releases.

Release Status Non-facility Facility
Q3 2026 Jun 30, 2026 – present X — —
Q2 2026 Mar 10, 2026 – Jun 29, 2026 X — —
Q1 2026 Dec 29, 2025 – Mar 9, 2026 X — —

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Source & method

Show sources

This is computed from CMS's Medicare Physician Fee Schedule Q1 2016 release (schedule pfs, effective January 2016). 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 (Q1 2016) · rvu16a.zip (PPRRVU16_V0122.csv row 13,705)

Conversion factor $35.8043 read from the same file, row 11, column 25.

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 Q1 2016 figures, even after a newer release lands.

CPT 84155 Medicare Physician Fee Schedule rate (Q1 2016). Localis. https://localishealth.com/cpt/84155/2016/A