Summary & Overview
CPT 84630: Zinc Level Assay, Blood or Urine
CPT code 84630 is a clinical laboratory service that quantifies zinc in blood, urine, or other specimens to detect zinc deficiency or excess. Zinc measurement is clinically relevant for assessing nutritional status, metabolic function, and disorders affecting insulin production and growth hormone pathways. Nationally, zinc testing supports diagnostic workflows in endocrinology, nutrition, pediatrics, and toxicology and informs treatment planning where trace mineral balance is relevant.
Key payers covered in this publication include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find an overview of the clinical context for zinc testing, typical sites of service, and the scope of services represented by the code. The report summarizes common billing modifiers and operational considerations for laboratories, and outlines benchmarking and reimbursement context where available. Where specific payer policies or coverage criteria differ, this publication highlights common themes across major commercial and federal payers.
This summary provides clinical and billing context for laboratory administrators, billing professionals, and policy analysts seeking concise information on CPT code 84630, including what the code represents, how it is used in clinical pathways, and which payers are most relevant for coverage and claims processing. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 84630 describes a laboratory test that measures zinc levels in blood, urine, or other specimens to identify excess or deficient amounts of this trace mineral that is necessary for insulin production and growth hormones.
Service type: Clinical laboratory diagnostic test (quantitative trace mineral analysis)
Typical site of service: Clinical laboratory or hospital laboratory; outpatient phlebotomy or specimen collection sites
Clinical & Coding Specifications
Clinical Context
A 42-year-old male with poorly controlled type 2 diabetes and unexplained slow wound healing presents to an endocrinology clinic. The ordering clinician documents symptoms of fatigue, poor appetite, and recurrent infections. To evaluate for possible trace mineral imbalance contributing to impaired insulin production and delayed tissue repair, a venous blood draw is performed and sent to the clinical laboratory for quantitative zinc measurement using atomic absorption or inductively coupled plasma methods. The specimen is handled per laboratory protocol, analyzed by a lab analyst, and results are reviewed by the ordering provider. The report informs management decisions such as nutritional counseling, supplementation, or further metabolic evaluation. Typical site of service: outpatient clinic or ambulatory phlebotomy center; testing may also occur in inpatient hospital laboratories, specialty clinics, or public health labs.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the physician/interpretive portion of a split technical/professional lab service if applicable under local policies. |
TC | Technical component |