Fathom 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
| Fathom | Nym | |
|---|---|---|
| Pricing model | Not published · custom quote based on coding volume | Per-transaction / per-chart · Priced per successfully coded chart |
| Speed to go live | 4 to 6 months, EHR integration and validation | 3-6 months, FHIR-based EHR integration |
| Automation model | Autonomous agents · autonomous coding, human review fallback | Autonomous agents · Fully autonomous coding, zero human review |
| Built for | Enterprise systems, Billing companies | Mid-size groups, Enterprise systems |
| Security posture | HITRUST, SOC 2 Type II, HIPAA | SOC 2 Type II, HIPAA |
| Company maturity | 10 yrs (est. 2016) | 8 yrs (est. 2018) |
| Financial backing | $61M+ · Series B | $94.5M · Growth equity |
| Named customers | 2 named | 2 named |
| Published results | Specific numbers public | No public numbers |
| Documented integrations | 3 listed | 5 listed |
| Third-party validation | None found | None found |
Bottom line
- Pick Fathom if you code high chart volumes and want most encounters coded autonomously, and can fund a multi-month EHR integration.
- 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.
Fathom
High-volume autonomous coding across specialties
- Founded
- 2016
- HQ
- San Francisco, CA
- Stage
- Series B
- Raised
- $61M+
What it does
- Codes encounters autonomously with deep learning and NLP
- Automates 90%+ of coding volume in many deployments
- Covers ED, radiology, primary care, and other specialties
- Routes low-confidence charts to human coders
- Improves HCC/RAF capture for value-based contracts
- Reduces coding cost, denials, and days to bill
Where it's strong
- Highest published automation rates in the autonomous coding market, with customer-verified results like Your Health's 95.5% automation at 98.3% accuracy.
- Epic Toolbox listing and multi-specialty deployment model shorten implementation for health systems.
- Strategic backing from CVS Health Ventures and clinical investors like Cedars-Sinai signals enterprise credibility.
What buyers should weigh
- Narrowly focused on coding, so you still need separate vendors for the rest of the revenue cycle.
- Automation rates vary a lot by specialty and documentation quality; your mix may not hit headline numbers.
- Total disclosed funding is modest relative to peers, worth probing on enterprise support depth.
Named customers
ApolloMD · Your Health
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?
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