ICD code definitions

CPT® Code 36416: Collection of Capillary Blood Specimen

December 4, 2025
3 min read
CPT® Code 36416

Overview
CPT® Code 36416 is used to report collection of a capillary blood specimen, typically via finger stick, heel stick, or earlobe puncture. Capillary blood collection is often performed when small volumes of blood are required for laboratory testing, especially in pediatric patients, point-of-care testing, or patients with difficult venous access.

This code represents the procedure of specimen collection itself. Laboratory analysis of the specimen is billed separately using the appropriate test codes.

Key Facts About CPT® 36416

  • Service type: Blood specimen collection
  • Provider type: Physicians, nurses, phlebotomists, and qualified healthcare professionals
  • Medical services included: Yes—capillary puncture and collection of blood sample
  • Specimen type: Capillary blood (finger, heel, or earlobe)
  • Common clinical indications:
    • Glucose monitoring
    • Hemoglobin or hematocrit testing
    • Neonatal screening
    • Point-of-care laboratory testing
    • Patients with difficult venous access

When to Use CPT® 36416

CPT 36416 is appropriate when:

  • A capillary blood sample is collected for laboratory testing
  • The procedure is medically necessary for diagnostic or monitoring purposes
  • Venipuncture is not feasible or practical due to patient age, condition, or blood volume requirements

Examples:

  • Collecting a finger-stick blood sample for a patient’s glucose monitoring in a diabetes clinic
  • Obtaining heel-prick blood from a newborn for metabolic screening
  • Collecting a capillary sample for point-of-care hemoglobin testing in an outpatient setting

Documentation Requirements

To properly support CPT 36416 billing, documentation should include:

  • Patient identifiers and date of service
  • Site of capillary puncture (finger, heel, earlobe)
  • Purpose of specimen collection
  • Technique used and any complications encountered
  • Laboratory tests ordered or collected from the specimen

Accurate documentation ensures compliance, proper reimbursement, and quality patient care.

Reimbursement and Coding Considerations

  • CPT 36416 is covered by most commercial insurers and Medicare when medically necessary
  • Laboratory testing performed on the specimen is billed separately
  • Modifier usage may be required if multiple collections are performed on the same day
  • Always verify payer-specific rules regarding bundled services and point-of-care testing

How OptiMantra Supports Capillary Blood Collection

OptiMantra’s integrated EMR and practice management system simplifies documentation, tracking, and billing for CPT 36416:

With OptiMantra, providers can:

  • Record capillary specimen collection directly in the patient chart
  • Track sample collection site, time, and purpose
  • Link specimen collection to corresponding laboratory orders
  • Generate audit-ready, compliant billing codes
  • Maintain longitudinal tracking of point-of-care and capillary testing results

By centralizing specimen collection workflows, OptiMantra helps practices maintain accurate records, streamline lab processes, and ensure proper reimbursement.

Try OptiMantra for free here!

Jessica Castro
Jessica Castro

Jessica is a Massachusetts-based LPN with 13+ years of experience in patient care, healthcare technology, and education. As the Implementation and Customer Success Manager at OptiMantra, she helps providers optimize EMR solutions for better workflows and patient outcomes. With a Bachelor's in Community Health and a Master's in Healthcare Innovation in progress, she is passionate about leveraging technology to improve care delivery. Through her writing, she shares insights on healthcare best practices, EHR optimization, and patient advocacy to support providers in delivering exceptional care.