Where our data comes from, and how old it is
Every dataset in this product is a public government file, and every page that shows you data from one also shows you which release it came from and when that release took effect. We are making a specific claim against the incumbents — that they ship stale reference data on expensive subscriptions — and a claim like that is only worth anything if we date-stamp our own work where you can see it.
ICD-10-CM
Loaded- Source
- CMS / CDC-NCHS, public domain
- Updated
- Annually on October 1, plus a mid-year update on April 1
The complete tabular list, alphabetic index, neoplasm table, table of drugs and chemicals, and the POA-exempt list. 98,186 codes, of which 74,719 are billable.
HCPCS Level II
Loaded- Source
- CMS, public domain
- Updated
- Quarterly
Roughly 8,000 codes for supplies, drugs, and services outside CPT.
LCD / NCD / billing-and-coding articles
Loaded- Source
- CMS Medicare Coverage Database
- Updated
- Weekly, every Thursday
Medical-necessity policy by MAC jurisdiction. This is the dataset incumbents most often let go stale, and it is the one that decides whether a claim is covered.
Physician Fee Schedule (RVU, GPCI, conversion factor)
Loaded- Source
- CMS, public domain
- Updated
- Annually, with quarterly corrections
CY2026 introduces two conversion factors, one for qualifying APM participants and one for everyone else. Our calculator models both.
CMS-HCC risk-adjustment model (V28)
Loaded- Source
- CMS, public domain
- Updated
- Annually, with the payment-year coefficients
The full V28 model: diagnosis-to-HCC mappings, hierarchies, interaction terms, and coefficients for all nine segments. Powers the RAF calculator in the workspace.
NCCI PTP edits and MUE limits
Withheld- Source
- CMS, behind an AMA click-through licence
- Updated
- Quarterly
Not loaded. These files contain CPT codes, and CPT is copyrighted by the American Medical Association. NCCI and MUE checking ship together with CPT support once we hold an AMA licence.
CPT
Withheld- Source
- American Medical Association, licensed
- Updated
- Annually
Not included. CPT requires a paid AMA data-file licence, which we do not hold. Any tool that shows you CPT descriptors is paying the AMA for that right. We will too — rather than shipping it on a technicality and hoping nobody checks.
CPT is a registered trademark of the American Medical Association. This page is reference information for professional coders and is not medical, legal, or billing advice.