CPT Code 88350Complete Billing & Coding Guide (2026)Imfluor ea addl 1antb stn px
About CPT 88350
CPT 88350 is a Current Procedural Terminology code in the Pathology/Lab category maintained by the American Medical Association. The CMS short descriptor reads "Imfluor ea addl 1antb stn px". For the full AMA long descriptor and clinical guidance, refer to the current CPT code manual.
Add-on codes cannot be billed alone and inherit their global period from the primary procedure. Payer scrubbers will reject add-on codes submitted without a valid base code on the same claim.
88350 has 1 NCCI bundling edit pairs documented. Run your scrubber against the NCCI quarterly update before submission. When clinically warranted, use modifier 59 or the X-modifiers (XE, XS, XP, XU) to bypass an indicator-1 edit, with chart documentation supporting the distinct service.
Code Properties
RVU Breakdown
Every CPT code’s Medicare payment is calculated from three Relative Value Unit components: physician work, practice expense, and malpractice. Together they multiply by the conversion factor to produce the payment amount.
Payment = Total RVU × Conversion Factor ($33.4009) × Geographic Adjustment (GPCI). National averages shown. Actual payment varies by locality.
Medicare Payment by State
Medicare adjusts payment by locality based on GPCI (Geographic Practice Cost Index). Higher cost-of-living areas like California and New York pay more. Rural states pay less. Top 12 states shown.
Showing top 12 of 53 states. Full locality data available in CMS PFS Locality file.
NCCI Bundling Edits
1 pairsThese codes trigger National Correct Coding Initiative edits when billed with 88350. An indicator of 0 means the pair cannot be unbundled. Indicator 1 means modifier 59 or X-modifiers may allow separate billing with supporting documentation.
Billing 88350 alongside a bundled code without the correct modifier generates CARC 97 denials. Payers often flag these as audit risks. Document medical necessity for the separate service and apply modifier 59 or the appropriate X-modifier (XE, XS, XP, XU) only when clinically justified.
Bundling denials on 88350 are recoverable when the edit indicator is 1 and the chart documents a distinct, separately identifiable service. Our coders verify the indicator and pick the precise X-modifier (XE, XS, XP, XU) instead of defaulting to modifier 59.
Applicable Modifiers
Modifiers commonly paired with 88350 based on its category. Apply only when the clinical circumstance warrants. Incorrect modifier use is a top audit target.
Component split modifiers (26 professional, TC technical) are the most under-applied modifiers in diagnostic billing. Practices that bill global on services where they only provided the read silently invite refund requests. We split components correctly at submission.
Find the revenue leakage in your 88350 claims.
Wrong modifier, missing documentation, bundling without justification, stale ICD-10 linkage: these are the silent revenue killers on Pathology/Lab claims. Our AAPC-certified team audits your last 90 days of 88350 claims, surfaces the recoverable dollars, and appeals them. Free, no obligation.
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Related CPT Codes
Codes in the same family as 88350
Specialty billing guides
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Everything about CPT 88350
What does CPT code 88350 cover?
CPT 88350 is a Current Procedural Terminology code in the Pathology/Lab category maintained by the American Medical Association. The CMS short descriptor reads "Imfluor ea addl 1antb stn px". For the full AMA long descriptor and clinical guidance, refer to the current CPT code manual.
What is the Medicare payment for CPT 88350?
The national average Medicare payment for CPT 88350 is approximately $106.88 in a non-facility setting and $106.88 in a facility setting. Actual payment varies by locality based on GPCI adjustments. Total RVU is 3.2 with a conversion factor of $33.4009.
What is the global period for CPT 88350?
CPT 88350 is an add-on code (indicator ZZZ). Its global period matches the base procedure it's billed with. Cannot be billed alone. Must be paired with a primary code per CPT guidelines.
What codes bundle with CPT 88350?
CPT 88350 has NCCI Procedure-to-Procedure edits with 1+ codes including 96523. Modifier indicator 0 means the edit cannot be bypassed. Indicator 1 means modifier 59 or X-modifiers may allow separate billing with documentation.
CPT codes and descriptions are copyright of the American Medical Association. RVU values reflect current CMS publications. Actual payment varies by locality. Commercial payer rates vary by contract.
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We audit your last 90 days of claims and surface the revenue leakage: wrong modifiers, missed bundling appeals, ICD-10 specificity gaps. AAPC-certified coders. 2.49% of collections. No setup fees.