P2P Call Guide

How to Win a P2P Call for Bariatric Surgery Denied by MA Plans

Payer-specific strategy, medical necessity arguments, and the exact phrases to use when Medicare Advantage denies Bariatric Surgery (CPT 43775, 43644, 43846).

Why MA Plans Denies Bariatric Surgery

BMI does not meet threshold

Supervised weight loss program not completed

Psychological evaluation not documented

Comorbidities not adequately documented

Know Medicare Advantage's Criteria

Medicare Advantage plans must cover all services covered by Original Medicare (CMS NCDs and LCDs) but may require prior auth. Plans use various criteria including InterQual, MCG, and proprietary guidelines.

Key policies to know:

  • Must cover all services covered by Original Medicare
  • Can require prior authorization not required by Original Medicare
  • CMS NCDs and LCDs serve as coverage floor
  • Organization determinations must be issued within 14 days (72 hours for expedited)

MA Plans's Specific Approach to Bariatric Surgery

Applicable Policy

CMS NCD 100.1 (Bariatric Surgery for Treatment of Morbid Obesity)

How MA Plans Typically Denies This

CMS NCD 100.1 covers Roux-en-Y, sleeve gastrectomy, and BPD/DS for BMI >= 35 with comorbidity. MA plans cannot add requirements beyond what the NCD specifies, but some try to impose longer supervised weight loss periods.

Your Strategy for This Payer

The CMS NCD does not require a specific supervised weight loss duration -- this is your strongest argument against MA plans that impose 6-month requirements. If the patient meets NCD criteria, the MA plan must cover it.

Key Phrase to Use on the Call

"This patient meets CMS NCD 100.1 criteria for bariatric surgery. The supervised weight loss period imposed by this plan exceeds what the NCD requires, which is not permitted under Medicare Advantage coverage rules."

Building Your Medical Necessity Argument

Document BMI >= 40 or BMI >= 35 with comorbidities

Show completion of 3-6 month supervised weight loss program

Include psychological clearance and nutritional evaluation

List comorbidities with supporting clinical data (A1c, BP, sleep study)

P2P Call Tips for MA Plans

Cite the relevant CMS NCD or LCD -- MA plans cannot deny what Medicare covers

If the service has a CMS NCD, that trumps the MA plan's internal criteria

Reference CMS regulations on MA coverage obligations

Request expedited determination if clinical urgency exists

Guidelines to Reference

  • ASMBS/IFSO Guidelines for Bariatric Surgery
  • NIH Consensus Statement on Bariatric Surgery

Relevant CPT Codes

CPT 43775CPT 43644CPT 43846

Specialty: General Surgery

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