CodaMetrix vs Fathom
Updated October 16, 2026
Health systems that want software to code most charts without a person often compare CodaMetrix and Fathom. Both draft codes and send only uncertain charts to coders, but CodaMetrix reads the patient's longer record and covers hospital and physician coding, while Fathom has built a reputation for very high automation in emergency and radiology work. The specialties you need covered first usually settle the choice.
Our analysts compared CodaMetrix and Fathom on specialties covered, automation rates, customer size, how each reads the record, and support, using the HIR review of each company and both vendors' announcements. In the following sections, we compare them across a table, describe the system each fits, and note their news this year.
CodaMetrix vs Fathom at a glance, October 2026
| What buyers weigh | CodaMetrix | Fathom |
|---|---|---|
| Pricing model | Software that codes medical charts automatically, with prices quoted in health system contracts. | Software or a managed coding service for large organizations, with quoted prices. |
| What drives cost | Chart volume, mix of specialties, the share of charts you want coded automatically, and how much connection work is needed. | How many charts you code, which specialties are covered, which services you buy, and how deeply it connects to your systems. |
| Specialties covered | Radiology, pathology, office and hospital visits, endoscopy, and surgery, with an emergency department module added in 2025. Clear edge | Used for emergency department and radiology coding, and the customers KLAS interviewed want it to grow into hospital medicine and surgery. |
| Charts coded with no person involved | Cuts manual coding by 70 percent. | Every customer KLAS interviewed in 2025 had 90 percent or more of its encounters coded fully and accurately by the AI. Clear edge |
| Size of its customers | Customers represent 220 hospitals in 27 states, including 9 of the 20 hospitals on the U.S. News Honor Roll. Clear edge | The customers KLAS interviewed were a mix of large health systems and large outpatient centers. |
| How it reads the record | Its CMX CARE platform looks at the patient's longer record, beyond the single note, when it picks codes. Clear edge | Its deep learning models draft codes from each chart's clinical documentation. |
| Support and implementation | Getting coding workflows live scores 7.3, with a collaborative working relationship in KLAS customer interviews. | Getting coding workflows live scores 7.2, with strong support marks in KLAS customer interviews, though a few rollouts took longer than expected. |
| Time to full value | About 3 to 6 months | About 3 to 6 months |
| What you need first | A named coding leader. | A named coding operations owner. |
| Deal-breaker | You only need a patient billing portal. | You only need a patient payment portal. |
| Pricing clarity score | 7.2 | 7.1 |
| HIR overall score | 7.6, Recommend. | 7.5, Recommend. |
| Best for | Health systems that want automated coding on both physician and hospital charts, with human coders reviewing the uncertain ones. | Health systems and billing companies that want automated coding across large chart volumes. |
| Not a fit for | Groups that will not let AI code any claim. | Organizations with no coding leader to own the charts the AI sends back. |
Which fits which buyer
List the specialties you want automated in year one.
Choose CodaMetrix if
- You want hospital and physician coding across many specialties.
- You value a vendor that came out of a large academic health system.
- You want coding that considers the wider patient record.
Choose Fathom if
- Emergency and radiology coding are your first targets.
- You want very high rates of charts coded with no person involved.
- You are a billing company handling large chart volumes.
Verdict
The scores are close, with CodaMetrix a little ahead for broad hospital and physician coverage. Fathom suits systems that want the highest automation in emergency and radiology coding.
Both need a coding leader to own the charts sent back for review.
Where the two tools are headed in 2027 and beyond
CodaMetrix: CodaMetrix was named first in the new Best in KLAS category for autonomous coding on February 4, 2026, and formed a council of health system leaders on coding quality on June 8, 2026.
Fathom: Fathom reported results from its Your Health deployment on March 19, 2026, and received investment from CVS Health Ventures on May 4, 2026.
Ask for audit accuracy on a sample of your charts before signing.
Methodology
Each row comes from the HIR reviews of CodaMetrix and Fathom, scored under the HIR method, and from each vendor's public pricing where it exists. Any published price for CodaMetrix or Fathom was checked on that vendor's own site on October 16, 2026.
A green check marks a clear edge for CodaMetrix or Fathom only where their review scores differ by at least 0.3 points or the two reviews show a plain difference. Rows with nothing published for either CodaMetrix or Fathom are left out, and time to full value for each adds up the rollout stages in its review.
Sources
- HIR review of CodaMetrix and HIR review of Fathom
- CodaMetrix website
- Fathom website
- CodaMetrix Best in KLAS, February 4, 2026
- CodaMetrix coding quality council, June 8, 2026
- Your Health deploys Fathom, March 19, 2026
- Fathom CVS Health Ventures investment, May 4, 2026