Charta Health vs MDaudit (2026)
Charta and MDaudit both review coding before claims go out, but one does the coding and the other audits it. Charta is a chart review platform built on large language models: it reads documentation for every encounter, faxes and scans included, codes after the note closes, corrects coding in the EHR or queues problem charts for a person, and cites the supporting text for each suggestion. MDaudit is the audit and revenue integrity system a compliance team runs, with eValuator's pre bill review, payer audit management, denial analytics and Auditor Assist proposing assessments for an auditor to decide. The organizations differ as well. Charta's named customers are outpatient groups, home health and community health centers, plus payers that use it for risk adjustment and HEDIS. MDaudit's are health systems and academic medical centers such as University of Chicago Medicine, Rutgers Health and Temple Health, where coders are audited as well as charts. On security paperwork, MDaudit holds HITRUST r2 and ai1 certifications with reports in a trust center, while Charta states HIPAA, SOC 2 and GDPR compliance and sends reports by email. Neither lists a price.
- Codes each visit after the note closes and can correct coding directly in the EHR.
- Cites the supporting documentation on each suggestion, including from faxes and scanned images.
- Configured per client by a Charta AI engineer around the client's own review criteria.
- Serves payers with risk adjustment, second pass QA, RADV audit management and HEDIS analytics.
- Runs scheduled, risk based, denial and coding quality audits of physicians, hospitals and coders.
- Payer Audit Management exchanges records with review contractors through esMD and eMDR.
- eValuator reviews every encounter between coding and billing, and RevID reconciles charges.
- HITRUST r2 and HITRUST ai1 certifications and a named subprocessor list.
This comparison is published by AI Health Index, an independent research platform that compares healthcare AI vendors objectively. Charta Health and MDaudit are each graded against the same capability taxonomy, from each vendor's own public materials and the regulatory record, under the AI Health Index verification standard. No vendor pays for placement, and no vendor has reviewed this page. How this evidence is graded
Plain facts
| Fact | Charta Health | MDaudit |
|---|---|---|
| Primary category | Autonomous Medical Coding | RCM & Prior Auth AI |
| Founded | 2023 | Not recorded |
| Headquarters | San Francisco, California, United States | Wellesley, Massachusetts, United States |
| Website | chartahealth.com | mdaudit.com |
Side by Side
Select any grade to read the note behind it.
Each vendor in one paragraph
Written to be quoted whole. Each paragraph states what the AI Health Index verified about the vendor, with the caveats attached.
Charta Health reviews documentation for every encounter before billing with large language models configured around each client's review criteria. For providers it codes visits after the note closes, corrects coding in the EHR or queues problem charts for a person, with citations on each suggestion; for payers it handles risk adjustment, second pass QA, RADV audits and HEDIS analytics. It reports an 11 percent revenue uplift and states HIPAA, SOC 2 and GDPR compliance.
Source: AI Health Index, September 2026
MDaudit sells a cloud platform for billing compliance and revenue integrity to health systems, physician networks, hospitals and ambulatory surgery centers, and says more than 100 US health systems use it. Teams run audits of physicians, hospitals and coders in one workflow, eValuator and RevID review encounters and reconcile charges before billing, and Auditor Assist proposes coding assessments for an auditor to decide. MDaudit holds HITRUST r2 and ai1 certifications and is sold by quote.
Source: AI Health Index, September 2026
Questions buyers ask
How do Charta and MDaudit differ?
Charta reads documentation for every encounter and codes, corrects or queues charts itself, citing the supporting text. MDaudit gives compliance and revenue integrity teams one platform for audits, payer audit management, denial analytics and eValuator's pre bill review. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified September 28, 2026. No vendor pays for placement.
Who reviews the AI's output in Charta and MDaudit?
Charta can queue problem charts for a person and attaches citations so a reviewer can check each code, though it can also code and correct without review. MDaudit's Auditor Assist proposes assessments for the auditor to accept or reject, and eValuator applies rules written by MDaudit's coding specialists. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified September 28, 2026. No vendor pays for placement.
How do Charta and MDaudit document security?
Charta states HIPAA, SOC 2 and GDPR compliance and sends reports by email. MDaudit holds HITRUST r2 and ai1 certifications, a SOC 2 report and TX-RAMP Level 2, with documents through its trust center on request. From the AI Health Index, drawn from each vendor's own published materials and the regulatory record, verified September 28, 2026. No vendor pays for placement.
Related comparisons
Other published head to head assessments involving these vendors or their closest peers. The full set for this category is on the RCM & Prior Auth AI page.
Neither lists a price. Charta's 11 percent revenue uplift and MDaudit's eValuator results are the vendors' own figures.