# CPT 82310

> Not at a published national rate. CPT 82310 carries status X (statutory exclusion) in the Q2 2017 release. The statutory definition of physician services does not include this item. Treat the blank amount as unpriced, not as $0.

## What it is

Measurement of the total amount of calcium circulating in blood, counting both the free, active portion and the portion bound to proteins such as albumin. Calcium levels are tightly controlled by the parathyroid glands, vitamin D, and the kidneys, so an abnormal result usually points to one of those systems rather than to diet. Because much of the calcium travels bound to albumin, results are interpreted alongside the albumin level; the separate ionized calcium test measures only the free fraction.

## Selected release

- Release: Q2 2017 (2017 B)
- Effective: April 1 – June 30, 2017
- Status indicator: X
- Office (non-facility) national allowed amount: not published
- Facility national allowed amount: not published
- Sequestration: not applied

## RVUs and formula

- Work RVU: not published
- Office (non-facility) practice expense RVU: not published
- Facility practice expense RVU: not published
- Malpractice RVU: not published
- Conversion factor: 35.8887
- Formula: `(work_rvu × work_gpci + pe_rvu × pe_gpci + mp_rvu × mp_gpci) × conversion_factor`

## Source and citation

- Source: Physician relative value file (Q2 2017)
- CMS file: https://www.cms.gov/medicare/medicare-fee-for-service-payment/physicianfeesched/downloads/rvu17b.zip
- Parsed file: PPRRVU17_V0209.csv, row 13,626
- Canonical page: https://localishealth.com/cpt/82310/2014/B
- Release-specific citation URL: https://localishealth.com/cpt/82310/2017/B
- Last significant update: 2026-08-04T03:07:42+00:00