Best Drug-to-ICD-10 Reference Tools (2026)
No existing drug reference tool maps medications to ICD-10-CM diagnosis codes for coding review. Drugs.com, RxList, and Epocrates are designed for clinical use, not medical coding. HCC Buddy is purpose-built to cross-reference 129,000+ drugs with their associated ICD-10-CM codes and HCC risk adjustment mappings. Drug data is sourced against Drugs@FDA and FDA drug labels, then mapped to the CMS ICD-10-CM code set.
| Feature | Drugs.com | RxList | FDA DailyMed | Epocrates | HCC BuddyOnly option |
|---|---|---|---|---|---|
| Drug information | |||||
| Drug → ICD-10 code mapping | |||||
| HCC risk adjustment mapping | |||||
| Condition → drug reverse lookup | Partial | ||||
| ICD-10-CM Encoder integration | |||||
| V24 + V28 dual HCC models | |||||
| FDA NDC data | |||||
| Drug interactions | |||||
| Trial | Yes (with ads) | Yes (with ads) | Yes | Limited | 14-day Pro trial |
| Built for medical coders |
The Bottom Line
If you're a clinical provider looking up drug interactions or side effects, Drugs.com and Epocrates are excellent choices. If you're a medical coder who needs to verify which ICD-10 codes a medication supports for risk adjustment capture, HCC Buddy is the only tool that does this.
The drug-to-diagnosis cross-reference is particularly valuable during retrospective chart review, where coders scan medication lists for conditions that may not be documented in the assessment and plan but are supported by active prescriptions.
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Drug reference sites answer clinical questions. HCC Buddy helps coders ask a different question: what ICD-10-CM diagnoses does this medication support for chart review?
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