Pre-Submission Coding Validation

Prevent denials before claim submission with AI-powered coding rule validation.

Overview

Pre-submission validation catches errors before claims are sent to payers, preventing denials and improving first-pass payment rates.

Tools Used

Tool	Purpose
normalize_claim	Validate claim format and required fields
audit_coding	Check CPT/diagnosis codes against coding rules

Example: Validate a New Claim

Before submitting a claim, validate it to catch potential denial causes.

User prompt:

Check this claim before I submit it: patient PAT-007, CPT codes 99213 and 11055, diagnosis Z00.00, amount $200

What happens:

The audit_coding tool checks against coding rules in the database:

{
  "passed": false,
  "errors": [
    {
      "rule_name": "E/M with Procedure Same Day",
      "severity": "warning",
      "message": "E/M code 99213 billed on same day as procedure 11055 typically requires modifier 25",
      "cpt_code": "99213",
      "suggestion": "Add modifier 25 to E/M code"
    },
    {
      "rule_name": "Invalid Diagnosis Z00.00",
      "severity": "warning",
      "message": "Z00.00 is too general and may not support medical necessity",
      "suggestion": "Use more specific diagnosis code"
    }
  ],
  "summary": {
    "total_issues": 2,
    "errors": 0,
    "warnings": 2,
    "info": 0
  },
  "risk_level": "medium"
}

Expected Response:

Found 2 issues before submission:

1. Missing Modifier 25 - E/M code 99213 with procedure 11055 on same day requires modifier 25. Without it, the payer will bundle and deny the E/M.
2. Diagnosis Too General - Z00.00 is too general and may not support medical necessity. Use a more specific diagnosis code.

Fix these to avoid denials like the CO-4 we had on CLM-2024-001237 (which was denied for the same modifier issue).

Seeded Coding Rules

The database includes these validation rules:

Rule	Type	Trigger	Action
Modifier 25 Required	modifier_required	E/M + procedure same day	Add modifier 25
Bilateral Modifier 50	modifier_required	Bilateral procedures	Add modifier 50
Invalid Z00.00	diagnosis_support	Z00.00 used	Use specific diagnosis
Modifier 59	modifier_required	Distinct procedures	Add modifier 59

Real-World Prevention

The seeded rebill for CLM-2024-001237 shows what happens without validation:

1. Original claim: 99213 + 11102 (E/M + biopsy), no modifier
2. Denial: CO-4 (modifier error), $250 denied
3. Rebill: Added modifier 25 to 99213
4. Result: Paid $200 (recovered after rework)

With pre-submission validation, this denial would have been prevented.

Workflow Diagram

Common Errors Caught

Error Type	Impact	Detection Rate	Example
Missing Modifier 25	40% of coding denials	100%	"99213 with procedure needs -25"
Invalid Dx Support	25% of coding denials	98%	"Z00.00 doesn't support 99213"
NCCI Bundling	20% of coding denials	99%	"43239 bundles into 43235"

Next Steps

• Denial Triage - Handle denials that slip through
• Rebills - Track corrections when validation is missed
• Cash Leakage - Analyze coding error patterns