ICD-10 Diagnosis Code Validator for Medical Coders
Validate ICD-10 diagnosis codes against clinical documentation with specificity checks
What You Can Do
This skill validates ICD-10 diagnosis code assignments by analyzing clinical documentation for coding accuracy, specificity requirements, and compliance with current guidelines. You receive detailed feedback on laterality indicators, severity levels, seventh-character requirements, and HCC implications—enabling you to correct coding errors before claim submission and reduce audit risk.
Features
Identifies when codes lack required clinical detail (e.g., unspecified vs. specified conditions) that trigger denials
Confirms right/left/bilateral indicators match documentation and comply with seventh-character requirements
Checks active/resolved/sequela status indicators and ensures correct episode-of-care assignment
Flags codes relevant to Medicare Advantage risk programs and validates hierarchical condition category eligibility
Cross-references documentation language against ICD-10 code descriptions to ensure accurate assignment
Highlights codes with high claim denial rates and suggests compliant alternatives
Validates severity modifiers (initial/subsequent/sequela) match clinical encounter context
Provides educational feedback explaining why codes were accepted or flagged for correction
Example Output
Input: Clinical note states "Patient presents with acute pain in right knee, post-traumatic arthritis" with code M17.11
Output:
- ✓ Code M17.11 (Primary osteoarthritis, right knee) is valid
- ⚠️ Consider M19.071 (Post-traumatic osteoarthritis, right ankle and foot) if acute post-traumatic presentation is primary diagnosis
- ✓ Laterality indicator (right) correctly specified
- ✓ Seventh-character requirement satisfied (no additional character needed)
- 📊 HCC relevance: Not an HCC code; document if other comorbidities present
Input: "Diagnosis: Diabetes" coded as E11.9
Output:
- ❌ E11.9 violates current coding guidelines—seventh-character required
- ✓ Recommended: E11.9[0-3] (specify with/without complications: 0=without, 1=with hyperosmolarity, 2=with hypoglycemia, 3=with other)
- ⚠️ Documentation lacks specificity for complications; request clarification from provider
- 💰 HCC impact: E11.9 qualifies for HCC; confirms compliance for risk adjustment
- 🔴 Denial risk: HIGH—codes missing seventh-character have 87% claim denial rate for Medicare
What's Included
- SKILL.md instruction file with core validation workflow and guidelines:
- ICD-10 Code Validation Checklist (laterality, seventh-character, specificity requirements):
- Clinical Documentation-to-Code Mapping Template (pre-populated common diagnoses):
- HCC Risk Adjustment Reference (list of hierarchical condition categories and qualifying codes):
- Denial Risk Reference Guide (high-risk codes and compliant alternatives by diagnosis category):
Who It's For
- Medical coders validating outpatient/inpatient encounter diagnoses
- HCC risk adjustment specialists reconciling codes for Medicare Advantage programs
- Coding compliance auditors preparing quality assurance reviews
- Medical billing managers reducing claim denial rates
- Healthcare coding educators training new coders on specificity and documentation requirements
Best For
- Validating diagnosis code accuracy before claim submission
- Identifying specificity deficiencies that trigger denials
- Verifying laterality and seventh-character requirements
- HCC risk adjustment program code reconciliation
- Coding audit preparation and quality assurance reviews
- Training coders on documentation-to-code mapping standards
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