Free tools
Free tools & guides for healthcare billing
Fast, private reference tools and plain-English coding guides from the team behind Medmio CodeSightTM. No login, no limits — the lookups run right in your browser (NPI search queries the official NPPES registry).
For billing & coding teams
Free
Denial Code Decoder
Paste a remittance — every CARC & RARC line decoded at once.
Open tool
Free
ICD-10 Code Lookup
Search 74,000+ ICD-10-CM diagnosis codes by condition or number.
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Free
HCPCS Level II Lookup
Search 7,700+ Level II codes — J-codes, DME, supplies, modifiers.
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Free
Place of Service Lookup
Every CMS place-of-service code — office, telehealth, ER, inpatient.
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Free
Denial Cost Calculator
What denials cost you a year — and what a 1-point drop is worth.
Open tool
For patients & the public
Free coding & billing guides
Primary care & chronic conditions
Vein & vascular
Behavioral health
HCPCS & billing
From the blog
No matching guides — try a condition, code set, or specialty.
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These tools speed up the lookups. CodeSightTM removes them — it reads the clinical note and suggests the ICD-10 & CPT codes for you, with a human-review queue for anything uncertain.