CodaMetrix vs Nym
Two Autonomous Medical Coding vendors, side by side. Facts from public sources; judgments are ours.
At a glance
Derived from public facts · a rough scale, not a ranking
| CodaMetrix | Nym | |
|---|---|---|
| Pricing model | Not published · Enterprise quotes only | Per-transaction / per-chart · Priced per successfully coded chart |
| Speed to go live | Four-plus months including silent learning phase | 3-6 months, FHIR-based EHR integration |
| Automation model | Autonomous agents · autonomous coding with exception review | Autonomous agents · Fully autonomous coding, zero human review |
| Built for | Enterprise systems | Mid-size groups, Enterprise systems |
| Security posture | SOC 2 Type II, ISO 27001, HIPAA | SOC 2 Type II, HIPAA |
| Company maturity | 7 yrs (est. 2019) | 8 yrs (est. 2018) |
| Financial backing | $110M+ · Series B | $94.5M · Growth equity |
| Named customers | 5 named | 2 named |
| Published results | No public numbers | No public numbers |
| Documented integrations | 1 listed | 5 listed |
| Third-party validation | None found | None found |
Bottom line
- Pick CodaMetrix if you are a large academic or multi-specialty health system ready to fund a months-long project to automate coding at scale.
- Pick Nym if you have high-volume ED, radiology, or outpatient coding and can fund a months-long integration to take humans out of the loop entirely.
CodaMetrix
Autonomous coding spun out of Mass General Brigham
- Founded
- 2019
- HQ
- Boston, MA
- Stage
- Series B
- Raised
- $110M+
What it does
- Autonomous coding of professional-fee charges from clinical notes
- Covers radiology, pathology, surgery, and other specialties
- Routes low-confidence cases to human coders
- Clinically enriches claims data for audit and compliance
- Customers report 60% coding cost and 70% denial reductions
Where it's strong
- Spun out of Mass General Brigham's own billing operation, so the product was proven on real academic-center volume before it was sold.
- Reference customers are elite academic systems (MGB, Mount Sinai, Yale, Henry Ford) with published outcome figures.
- Confidence-based routing to human coders is an honest architecture: it automates what it can prove, not everything.
What buyers should weigh
- Value scales with volume; it is built for large Epic-based health systems, not small physician groups.
- Coverage is by specialty and service line, so confirm your highest-volume departments are actually supported.
- At roughly $110M raised it is well capitalized for its niche but much smaller than the RCM incumbents it displaces.
Named customers
Mass General Brigham · Mount Sinai Health System · Yale Medicine · Henry Ford Health · University of Colorado Medicine
Integrations
Nym
Explainable autonomous coding for ED and outpatient
- Founded
- 2018
- HQ
- New York, NY
- Stage
- Growth equity
- Raised
- $94.5M
What it does
- Fully autonomous coding with zero human touch
- Assigns ICD-10 and CPT codes in seconds per chart
- Explainable audit trail justifying every code
- Covers emergency medicine, radiology, outpatient surgery, urgent care
- Processes over six million charts annually
Where it's strong
- True zero-touch autonomous coding, with codes assigned in seconds and no human in the loop for in-scope charts.
- Explainability is the differentiator: every code comes with a traceable justification, which audit and compliance teams value.
- Deployed in 40+ US hospitals including Geisinger and Ochsner, processing over six million charts a year.
What buyers should weigh
- Supports six service lines (ED, radiology, outpatient surgery, outpatient visits, inpatient professional, urgent care); everything else still needs coders.
- Charts falling outside the engine's confidence threshold route back to your human coding staff, so plan for a hybrid operation.
- A new CEO (Lori Jones) arrived in April 2026, so watch for strategy and roadmap shifts.
Named customers
Geisinger · Ochsner Health
Integrations
Compare against the rest of Autonomous Medical Coding
Deciding between these two?
First Pass tracks Autonomous Medical Coding every week: funding, launches, and what changed since this page was written.