Vitamin Assays
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Defines medical coverage and limitations for laboratory vitamin assays and multi‑vitamin assay panels for Baylor Scott & White Health Plan members; applies across lines of business unless otherwise noted and references applicable Medicare LCDs/LCDs for Vitamin D testing.
No material clinical or coverage changes in this revision.
Coverage Position and Limitations
inv-01: Coverage position and limitations
Policy position and key coverage rules
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Assays that measure multiple micronutrients—such as combined panels that include two or more vitamin tests or mixed tests for vitamins, minerals, antioxidants, and metabolic function—are considered screening procedures and are not medically necessary when ordered as routine population screening. BSWHP therefore does not cover multi‑vitamin or broad micronutrient panels intended for general screening purposes.
Vitamin assay panels that include more than one vitamin assay are considered screening and are not medically necessary when ordered for general population screening. Claims for these panels may be denied; documentation should demonstrate a medically indicated reason when multiple assays are ordered together.
Vitamin D testing (CPT 82308 and 82652) performed for general screening without a qualifying diagnosis listed in the referenced non‑Texas LCDs (L37535 and L34658) is not medically necessary. Once a member is confirmed vitamin D deficient, repeat testing is medically necessary only to document adequate replacement; testing more often than annually is not considered medically necessary unless the member has an ongoing deficiency that justifies more frequent monitoring.
When Testing Is Covered
inv-14: Evaluation of suspected vitamin deficiency with appropriate qualifying diagnosis (per LCD for Vitamin D testing).
Covered when ALL of the following are met:
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Codes and Frequency Rules
| 82180 | Ascorbic acid (Vitamin C), blood |
| 82308 | Vitamin D; 25 hydroxy, includes fraction(s), if performed |
| 82379 | Carnitine (total and free), quantitative, each specimen |
| 82607 | Cyanocobalamin (Vitamin B-12) |
| 82652 | Vitamin D; 1,25 dihydroxy, includes fraction(s), if performed |
| 82746 | Folic acid; serum |
| 83090 | Homocysteine |
| 84207 | Pyridoxal phosphate (Vitamin B-6) |
| 84252 | Riboflavin (Vitamin B-2) |
| 84425 | Thiamine (Vitamin B-1) |
Ordering and Billing Guidance for Providers
No prior authorization required
Prior authorization is not required for vitamin assays.
Include qualifying diagnosis and indication on orders
Order tests with appropriate supporting documentation: include the qualifying diagnosis where required by referenced LCDs and document the clinical indication and requested frequency.
- Include the qualifying diagnosis listed in non‑Texas LCDs (L37535, L34658) for Vitamin D testing when applicable.
- Document clinical indication and requested testing frequency, especially for codes with frequency limits.
Support medical necessity with diagnosis and frequency documentation
Medical necessity must be supported by a qualifying diagnosis when required; document diagnosis and frequency limitations for specific CPT codes in the medical record and on the claim.
- When Vitamin D testing is ordered, ensure the claim and record contain a qualifying diagnosis per the referenced non‑Texas LCDs (L37535, L34658).
- For CPT codes with frequency limits, document reason for testing and prior test dates if repeating tests.
Risk of denial for vitamin assay panels ordered as screening
Vitamin assay panels (more than one vitamin assay) are considered screening and not medically necessary; claims for panels ordered for general screening may be denied.
- Avoid ordering multi‑vitamin or micronutrient panels for general population screening without specific clinical indications.
Risk of denial for Vitamin D screening without qualifying diagnosis
Vitamin D testing without a qualifying diagnosis per the referenced LCDs is not medically necessary and may be denied.
- For CPT codes 82308 and 82652, include a qualifying diagnosis from LCDs L37535 or L34658; testing for general screening is not covered.
- Once deficiency is established, follow‑up testing is medically necessary only to confirm adequate replacement and generally no more often than annually unless deficiency persists.
Ordering requirements: no prior authorization; include qualifying diagnoses
No prior authorization is required; providers must order vitamin assays with supporting qualifying diagnoses where required by LCDs and document indication and frequency.
- Prior authorization: Not required.
- Include qualifying diagnosis on orders for Vitamin D testing per LCDs L37535 and L34658 when applicable.
- Adhere to frequency limitations (e.g., no more often than annually for follow‑up vitamin D testing once deficient).
Services Not Covered
Vitamin assay panels (multi‑vitamin/micronutrient panels) ordered for general screening are not covered. In addition, select CPT codes included in the policy may have specific diagnosis‑only, frequency‑only, or combined diagnosis and frequency restrictions; these code‑level limitations should be applied by automated claim edits and may render those individual tests not covered when the stated requirements are not met.
Definitions
Background
Vitamin assays measure serum concentrations of individual vitamins (for example, vitamin D, vitamin B‑12, vitamin C, vitamins A and E, vitamin K, folate) to evaluate suspected deficiency. Routine population screening using multi‑vitamin or broad micronutrient panels is considered low‑value and is not supported by this policy. When clinical concern exists for a specific deficiency, individual vitamin tests may be appropriate with documentation of a qualifying diagnosis; vitamin D testing additionally requires adherence to LCD‑specified diagnoses and frequency guidance.
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