Brellium raises $23M to audit clinical notes with AI before claims go out

Brellium, which uses AI to audit clinical documentation and coding, has raised $23 million. The round was led by Left Lane Capital and First Round Capital, with Digital Health Venture Partners taking part, according to Ventureburn and the AlleyWatch funding report for 13 October. The round's series was not disclosed.

What the product does

Brellium's core system, CortexLM, reads patient notes and checks them against each provider's own requirements, looking for documentation gaps, coding errors and compliance issues. It flags problems and suggests fixes before a claim reaches the payer.

The commercial logic is simple: find the problem before the payer does. Brellium says it has audited 22 million patient visits and helped protect nearly $2 billion in provider revenue from clawbacks.

The numbers

Ventureburn reports that Brellium works with more than 200 provider groups, covering over 215,000 providers across all 50 US states. Headspace is named as a customer that widened its clinical quality programme after adopting the platform. AlleyWatch puts Brellium's reported equity funding at $39.7 million, and lists its founders as Alex Tu, Henry Kasa, Max Katzman and Zach Rosen, who started the company in 2021.

Where it goes next

The new money is aimed at expanding into cardiology, pain management and primary care. Each of those specialties has its own documentation and coding demands, so the expansion is as much a content and rules exercise as a sales one. The company's stated goal is to "catch issues earlier by automating chart audits."

The bigger picture

Pre-billing integrity sits where compliance and revenue cycle management meet. Brellium's pitch is that fixing a documentation gap before submission protects revenue that might otherwise be lost to a clawback. In practice, that moves the audit from a look back after payment to a check before the claim leaves the building. The move into three new specialties is a test of whether CortexLM's rules can be adapted quickly to very different documentation requirements, and it widens Brellium's audience from compliance and quality teams to the revenue cycle leaders who own denials and collections. It also lands in a busy month for revenue cycle funding, with Suki and Sunbound announcing raises in the same week.