CPT 88313: Technical Special Stain for Group II (e.g., iron, trichrome)
Medicare pays $56 and commercial payers pay $63 on average nationally for this procedure.
CPT code 88313 describes the technical component where a laboratory analyst performs special staining of tissue specimens for Group II (other) special stains, such as iron or trichrome stains; the service is a clinical laboratory histology staining procedure typically performed in an anatomic pathology laboratory or hospital pathology lab and results in slides prepared for interpretation and reporting by a qualified provider.
For related coverage guidance, see recent payer policy updates: Destruction of Pre-Malignant Skin Lesions, Onychomycosis diagnostic testing and coverage, Treatment of Capillary Malformations (Port Wine Stains).
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National Reimbursement Benchmarks
Commercial averages (BUCA) sit slightly above Medicare on mean reimbursement for CPT 88313, with BUCA at $63.40 versus Medicare at $56.30. That gap of $7.10 reflects modest upside in commercial negotiated pricing relative to the national Medicare average across localities. Median values differ where available, but the mean comparison highlights that commercial payers on average pay a small premium over Medicare for this code.
Dispersion (P75 minus P25) varies meaningfully by payer: Blue Cross Blue Shield shows a wide spread of $49.90 (from $41.80 to $91.70), and Aetna and Cigna also have large spreads of $55.40 and $71.50 respectively, indicating substantial variability in commercial contract rates. UnitedHealth Group is comparatively tighter with a spread of $44.00, while BUCA’s interquartile spread is $53.00 and Medicare’s spread is $69.00, reflecting notable variability across localities.