CPT
31231 — Nasal endoscopy, diagnostic, unilateral or bilateral
Verify the code matches the actual service and dose.
Surgery & procedures
36416 — Collection of capillary blood specimen, finger, heel, or ear stick
This code covers collecting a small blood sample by pricking a finger, heel, or ear — commonly known as a fingerstick or capillary blood draw.
- Typical setting: Hospital OR, ASC
- National avg charge (illustrative): $3-$10 Medicare allowed (often $0 separately billed when bundled into a facility visit; commercial payers $5-$12)
- Most-disputed reason: Upcoding to 36415: billing the venipuncture code (36415) when only a fingerstick was performed — the collection method must match the code
What it means
What 36416 actually means
This code covers collecting a small blood sample by pricking a finger, heel, or ear — commonly known as a fingerstick or capillary blood draw. It is used for point-of-care testing such as blood glucose checks, newborn heel sticks for metabolic screening, or capillary blood gas testing. It is reimbursed at a much lower rate than a standard venipuncture (36415).
Common errors with this code
What goes wrong on real bills.
Most bills that look correct still contain at least one of these issues. Up to 49% of medical bills contain errors (CFPB).
- Upcoding to 36415: billing the venipuncture code (36415) when only a fingerstick was performed — the collection method must match the code
- Billing when already included in a procedure: fingerstick glucose testing during a diabetic office visit is often considered included in the E/M service
- Multiple units: billing multiple units of 36416 per visit for multiple fingerstick attempts — only one unit should be billed per collection encounter
If you see 36416 on your bill
Three steps before paying.
1. Get the itemized bill. If your statement only shows a summary, request the CPT-level itemized bill before paying. Generate the request language →
2. Cross-check against the EOB. Compare what your insurer's Explanation of Benefits says you owe versus what the hospital is asking. They disagree more often than people think. Read the bill-vs-EOB guide →
3. Run a free Bill Scan. Upload the bill (and EOB if you have it) and BillBusted will flag the most likely issues with this specific code in your specific state. Run free scan →
Related codes
Other codes in this category.
People who land on 36416 often also see these adjacent codes on the same bill.
CPT
31237 — Nasal/sinus endoscopy, surgical; with biopsy, polypectomy, or debridement
Verify the code matches the actual service and dose.
CPT
36415 — Routine venipuncture for collection of specimen
Verify the code matches the actual service and dose.
CPT
38221 — Bone marrow biopsy, needle; first sampling
Verify the code matches the actual service and dose.
Related BillBusted guides
Plain-English reads if you see 36416 on a bill.
36416 FAQ
Plain-English answers.
What does 36416 usually cost?
$3-$10 Medicare allowed (often $0 separately billed when bundled into a facility visit; commercial payers $5-$12). Costs vary by region, payer contract, and whether the service was performed in a hospital outpatient department (which adds a facility fee) versus a free-standing clinic.
What's the most common billing error on 36416?
Upcoding to 36415: billing the venipuncture code (36415) when only a fingerstick was performed — the collection method must match the code
What should I do if I see 36416 on my bill?
Request the itemized bill and the matching EOB from your insurer. Compare the units/quantity billed against what you actually received. Run a free BillBusted scan to flag the most likely errors specific to 36416 before paying.
Don't pay 36416 blindly.
The free scan tells you in under 60 seconds whether this charge looks reasonable for your situation.