What is the best drug-to-ICD-10 code lookup tool?

HCC Buddy is the only tool that directly maps medications to their associated ICD-10-CM diagnosis codes with HCC risk adjustment data. Traditional drug reference sites like Drugs.com and RxList provide drug information but do not map to ICD-10 codes.

Why would a medical coder need a drug-to-diagnosis reference?

Medical coders use drug-to-diagnosis cross-references to verify that a patient's medication list supports documented diagnoses. If a patient takes metformin but diabetes isn't coded, this tool flags the gap for provider query, helping capture accurate HCC codes.

Does any other tool map drugs to HCC codes?

No. As of 2026, HCC Buddy is the only tool that maps medications directly to ICD-10-CM codes with CMS-HCC V24, V28, ESRD, and RxHCC risk adjustment mappings. Other drug databases focus on clinical information, interactions, and side effects.

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	7-day free trial, no card
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.

See the mapping HCC Buddy does in one card

One ICD-10-CM lookup returns the CMS-HCC V28, V24, ACA/HHS, ESRD, and RxHCC mapping with the RAF weight, in a single card. No tab juggling, no stale references.

HCC Buddy code card for E11.9 showing the CMS-HCC V28, V24, ACA/HHS, ESRD/PACE, and RxHCC mappings at a glance

Compare with your real workflow

Check one medication against diagnosis support.

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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Current with CMS· FY 2026 Apr update · V28 2026

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Best Drug-to-ICD-10 Reference Tools (2026)

The Bottom Line

See the mapping HCC Buddy does in one card

Check one medication against diagnosis support.

Get drug-to-diagnosis workflow notes

Frequently Asked Questions