Summary & Overview
CPT 80418: Rapid Combined Anterior Pituitary Evaluation Panel
CPT code 80418 denotes a complex, multi-analyte laboratory panel that measures seven component anterior pituitary tests, with four units reported for each analyte, typically on serum or plasma. Nationally, such panels are important for endocrine evaluation, guiding diagnosis and management of pituitary disorders and hormonal dysfunction. The code captures resource-intensive laboratory processing and reporting for comprehensive anterior pituitary assessment.
Key payers discussed include Aetna, Blue Cross Blue Shield, Cigna Health, UnitedHealthcare, and Medicare. Readers will find a concise overview of clinical context for use of the panel, typical sites of service, and what to expect in coverage and billing practice across major national payers. The publication summarizes billing considerations, commonly observed payer behaviors (prior authorization and medical necessity review), and benchmarking topics relevant to laboratories and billing teams.
This report provides clinical context for when a combined anterior pituitary panel is used, outlines common claims and coding considerations, and highlights areas for billing teams to review with payers. Data not available in the input is noted where applicable.
Billing Code Overview
CPT code 80418 describes a complex combined rapid anterior pituitary evaluation panel in which the lab analyst measures the level of each of the seven component tests, with four units for each analyte, typically performed on a serum or plasma sample. This code represents a multi-analyte laboratory procedure focused on anterior pituitary hormone assessment.
-
Service type: Complex laboratory panel (multi-analyte hormone assay)
-
Typical site of service: Clinical laboratory or hospital laboratory using serum or plasma samples
Data not available in the input for modifiers, associated taxonomies, ICD-10 diagnoses, and related codes.
Clinical & Coding Specifications
Clinical Context
A 42-year-old woman presents to endocrinology with months of fatigue, unexplained weight changes, irregular menses, and occasional headaches. Initial screening tests (basic metabolic panel, TSH) are inconclusive. The endocrinologist orders a complex anterior pituitary evaluation panel to measure multiple pituitary-dependent hormone levels simultaneously on a single serum sample to assess pituitary function and guide further testing and imaging.
The clinical workflow: the patient visits a phlebotomy center or hospital outpatient lab; a blood sample is drawn into serum or plasma tubes, labeled, and sent to the clinical laboratory. A laboratory analyst performs the combined rapid anterior pituitary evaluation panel, measuring each of the seven component analytes with appropriate controls and reporting individual results. Results are reviewed by the ordering endocrinologist, who correlates hormone patterns with clinical findings and decides whether to pursue dynamic endocrine testing, pituitary MRI, or medical therapy. Typical site of service is an outpatient laboratory or hospital outpatient lab; this service is billed as a laboratory procedure when processed by the performing laboratory.
Coding Specifications
| Modifier | Description | When to Use |
|---|---|---|
26 | Professional component | Use when billing only the professional interpretation component, if applicable for lab-based consultative interpretation. |