ICD-10 Coding Tools
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E11.9 Type 2 diabetes
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I50.20 Heart failure
✗ Code First

Everything You Need for ICD-10 Coding

Browse codes, search by keyword, understand guidelines, and validate accuracy — all free, no signup required

Browse ICD-10 Codes

Explore the complete ICD-10-CM code directory. Browse by chapter, category, or find commonly used diagnosis codes with full descriptions.

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Search Diagnosis Codes

Look up ICD-10-CM codes by keyword, code number, or description. Instantly find the right code for any diagnosis.

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ICD-10 Coding Guidelines

Master official coding rules: Code First, Use Additional Code, Excludes1 vs Excludes2, Laterality, Specificity, and more.

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Validate & Audit Codes

Check encounter-level ICD-10 codes against 13 official rules. Detect conflicts, sequencing issues, and compliance risks instantly.

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Stay Current with ICD-10

Annual updates, coding articles, and best practices

Annual Updates

FY2026 and FY2025 ICD-10-CM changes. New codes, deletions, and revised guidelines effective each October 1.

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Coding Blog

Articles on common coding errors, RADV audit risks, risk adjustment, and real-world examples.

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Your Complete ICD-10 Coding Resource

ICD10Guideline.com provides healthcare coders, billers, and compliance teams with the tools and knowledge needed for accurate ICD-10-CM coding. Whether you're looking up a specific diagnosis code, reviewing official coding guidelines, or validating an entire encounter before submission, our platform has you covered.

Our free tools are built on official CMS and CDC coding rules, updated annually to reflect the latest ICD-10-CM changes. From Code First and Use Additional Code conventions to Excludes1/Excludes2 conflicts and laterality requirements, every validation is grounded in published guidelines. Healthcare organizations use our platform to reduce claim denials, prepare for RADV audits, and ensure coding accuracy across their operations.

Code First Rule Use Additional Code Excludes1 vs Excludes2 Laterality Specificity Gender Conflicts
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Why Healthcare Organizations Trust Us

Transform your coding workflow with evidence-based guidelines and automated validation

Improve Accuracy

Automated rule checks ensure every code meets guidelines

Speed Up Audits

Instant validation saves hours of manual review time

Ensure Compliance

Stay aligned with official CMS and CDC standards

Prevent Denials

Catch coding errors before they cause revenue loss

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Browse codes, search diagnoses, learn guidelines, or validate encounters — everything you need is free and ready to use.

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