Is CPT 85004 overcharged?
85004: White cell differential, automated (Lab)
Approximate Medicare national rate
$6.47
Source: CMS Clinical Lab Fee Schedule CY2026 Q4 (national limit). National amount; actual Medicare payment varies by locality.
What's a reasonable charge?
Commercial insurers typically pay roughly 1.5 to 2.5 times Medicare. If you were billed more than $19.41 for 85004, ask for an itemized bill, request the provider's cash price, and dispute the difference.
Check your whole bill
Duplicates and unbundling are often worth more than a single high price. Scan your bill free