Smear special stain
CPT code 87207 covers the laboratory procedure of applying special stains to a smear sample to help identify microorganisms like bacteria, fungi, or parasites under a microscope. This is a common diagnostic test used to detect infections that standard staining methods might miss.
This calculator gives a typical-case estimate using standard Medicare modifier rules. Actual payment depends on payer policies, documentation, code-specific CMS status indicators, and locality. Verify before billing.
RVU breakdown
Conversion factor: 32.3465 · Source: CMS MPFS RVU25A · Confidence: High
NCCI bundling edits
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Billing tips
Document the specific type of special stain performed (acid-fast, GMS, PAS, trichrome, etc.) in the procedure description and medical record
Impact: Reduces denials for lack of specificity; payers often deny claims lacking stain type documentation, resulting in $17.14 loss per test
Bill 87207 separately for each type of special stain performed, not per slide or per field examined
Impact: Each distinct stain method qualifies as a separate billable service with modifier 59/XS; can increase revenue by $17.14 per additional stain type when medically necessary
Verify that special stain is not bundled into the primary culture or identification code before billing separately
Impact: Medicare and commercial payers frequently bundle special stains with culture codes 87070-87077; unbundling can trigger audits and recoupment
Ensure medical necessity is clearly documented with specific clinical indication (suspected TB, fungal infection, etc.) in the ordering physician's notes
Impact: Lack of medical necessity is the #1 denial reason; proper documentation can prevent 30-40% of denials
For acid-fast bacilli (AFB) stains, consider using 87206 instead if only performing a basic AFB smear without special modifications
Impact: Code selection accuracy prevents downcoding; 87206 has similar reimbursement but different documentation requirements
When billing multiple units on the same date of service, attach detailed notes explaining why multiple special stains were medically necessary
Impact: Proactive documentation reduces claim review time and prevents automatic denials for units greater than one; saves appeal costs of $50-150 per claim
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