Palmetto GBA, Noridian, CGS, and WPS MolDX programs mandate a unique 5-character DEX Z-Code in Loop 2400 REF02 for all molecular pathology CPT codes. Missing Z-codes or unverified LCD medical necessity indications trigger instant claim rejections. Scrub your molecular panels and genetic tests against CMS criteria before submission.
MolDX Medicare Administrative Contractors (Palmetto GBA, Noridian, CGS, WPS) automatically reject molecular pathology and genetic testing claims that omit a DEX Z-Code in Loop 2400 REF02 or fail Local Coverage Determination (LCD) clinical indications. Scrub your molecular panels before claim release to prevent uncollectible denials.
Compliant molecular diagnostics submission. DEX Z-Code is populated in Loop 2400 REF02 with qualifier "17", clinical LCD coverage criteria are fulfilled, and genetic counseling requirements are substantiated.
// Loop 2400 Line Item Service LX*1~ SV1*HC:81162:1450.00:UN:1***1:2:3~ REF*17*ZB49A~
Diagnostic laboratories lose millions when DEX Z-Codes are misassigned or lack documented LCD criteria. Aethera’s certified molecular coding auditors will scrub 20 of your active claims or past denials with zero obligation.
Are molecular pathology, pharmacogenomics, or NGS claims triggering CARC 16 / N382 rejections or retrospective LCD audit clawbacks? Aethera's certified pathology billing specialists verify every DEX Z-Code and clinical indication before claim submission to protect 100% of your laboratory allowable. Let our senior AAPC-certified billing team audit 50 of your active claims or past denials — completely free, with guaranteed under-48-hour findings.
Test our scrub rules and appeal workflow on 50 real claims. Zero commitment, no credit card required.
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