Best Medical Coding Software (2026): Top 9 Compared

Solventum 360 Encompass is the hospital coding platform formerly sold as 3M 360 Encompass. It moved to Solventum when 3M spun off its health care business in 2024, and the product page notes that the computer-assisted coding module was previously the 3M product.

The computer-assisted coding (CAC) module reads the pertinent patient documentation and auto-suggests diagnosis and procedure codes, using the Solventum Coding and Reimbursement System (CRS) as its decision-support foundation. Coders see annotations and evidence colours that link each suggestion to the record, and can accept or adjust it within the code path. The fact sheet lists advanced code sequencing, single-path outpatient coding, concurrent coding, dashboards, and identification of quality measures such as potentially preventable complications and patient safety indicators before billing. A feature called Code Confidence moves historically accurate, high-confidence suggestions directly into the CRS summary screen, which Solventum describes as the first step toward autonomous coding. The wider platform page adds that its newer AI codes outpatient visits, sends routine cases to billing and passes complex ones to coders.

Ownership is in motion. On 5 August 2026 Solventum announced its intent to separate the Health Information Systems business, which it says is used by more than 75% of US hospitals, targeting completion within 12 to 18 months through a spin-off, sale or combination.

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Optum Integrity One

enterprisebusiness.optum.com ↗

Optum Integrity One is Optum's middle revenue cycle platform, launched in May 2025. Optum describes it as autonomous-first: it consolidates facility and professional coding, outpatient charging, clinical documentation integrity (CDI) and auditing into one interface, powered by Optum Clinical Language Intelligence (CLI).

According to the product page, CLI automates review of all clinical documentation, case identification and code assignment, and supports exception-based workflows. Routine encounters are coded automatically; when clinical signals indicate complexity, a human coder is brought in. The page gives an emergency department example in which the platform surfaces likely heart failure from the record and sends the opportunity to CDI for a provider query. Optum cites one large health system with a 50% gain in inpatient coding productivity, a vendor-reported figure.

Optum also continues to sell Enterprise Computer Assisted Coding and CDI 3D, which suggest codes for coders to review and include modules for coding and reimbursement, audit and compliance, LYNX outpatient infusion charging, the Medical Reference Engine and Power BI reporting. Buyers already on Enterprise CAC should ask how a move to Integrity One is priced and staged.

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Optum EncoderPro.com

smboptumcoding.com ↗

EncoderPro.com is Optum's web-based encoder for ambulatory coding, billing and reimbursement. It packages the content of Optum's coding books, including ICD-10-CM, ICD-10-PCS, CPT and HCPCS references, specialty Coding Companions, cross coders and desk references, into one online subscription in three tiers.

Optum's spotlight page says the product helps coders research Hierarchical Condition Categories, National Correct Coding Initiative (NCCI) edits, and local and national coverage determinations for medical necessity. The Expert tier adds an automated edit review that checks selected codes for unbundling, modifiers and complete diagnoses before a claim is sent to a clearinghouse or payer, plus a 24-month historical content database for use during claim adjudication.

Add-ons extend the base product. They include a Claim Appeal and Denial Support module, a Claims Batch Editor, an EncoderPro.com Plus module with specialty search, education worth 25 continuing education units and the LYNX E/M tool, a Clinical Documentation Improvement module, a library of more than 2,500 specialty articles, and an AMA CPT content module. A separate edition for payers is priced at $1,495.95 per user.

Codify is the online encoder sold by AAPC, the US professional association that credentials medical coders. It combines code lookup across CPT, HCPCS and ICD-10-CM with official guidelines, coverage policies and AAPC reference content, sold in four tiers that build on one another.

Coder Search, aimed at students, covers code lookup, lay terms, personal notes, a code constructor and an E/M calculator. Basic Coder adds NCCI edits, NCD and LCD lookups and crosswalks. Pro Fee Coder, aimed at physician and non-physician coders, adds historical code sets, a real-time CMS-1500 scrubber, a specialty survival guide and optional add-ons. Complete Coder, aimed at inpatient coders and auditors, adds OPPS edits, DRG and ASC lookups and ICD-10-PCS.

The Codify page highlights Codie, an AI coding assistant that gives guidance inside the workflow, and an AI-powered Smart Search that searches all code sets from one box. The Historical Code Sets feature returns the tool to any quarter in the last six years, which helps when auditing older claims. Notes are saved against a code and carried forward each year, and subscribers can link Codify to AAPC eBooks. The Medicare Physician Fee Schedule tool shows RVUs, fees, modifier indicators and medically unlikely edits.

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Find-A-Code

smbfindacode.com ↗

Find-A-Code is an online encoder and coding reference used by coders, billers and auditors. It covers ICD-10-CM, ICD-10-PCS, CPT, HCPCS, dental CDT codes and other code sets, with several search methods: keyword search, an index search called Click-A-Dex, a tabular browser, a code builder and a newer IntelliSearch.

The subscription page groups the main features. NCCI validation tools check CPT and HCPCS code pairs against procedure-to-procedure edits and medically unlikely edits for non-facility, facility and Medicaid settings and flag needed modifiers. Medicare articles, LCDs and NCDs appear directly on code detail pages, and official coding guidelines from CMS, the CDC and the AMA are integrated alongside the codes. Aimee, an AI research assistant, answers coding, billing and compliance questions in plain language and links each answer to sources in Find-A-Code's own content.

The wider toolset includes Medicare fee and RVU lookups, an E/M calculator, a global period calculator, an HCC risk score calculator, an MS-DRG grouper, an APC packager and pricer, an ASC payment calculator and Scrub-A-Claim, a claim scrubber. Medical dictionaries, a drug database with NDCs, CEU courses and webinars are also offered. The Facility/ASC tier is aimed at hospitals and surgery centres.

Fathom is a San Francisco company that sells autonomous medical coding. Its site describes a direct-to-bill service: incoming charts are reviewed, those the system can code are coded and sent to billing without human intervention, and the rest pass to the customer's existing coding operation. A second product audits every chart already coded by staff or an outsourced vendor and flags any that may cause a denial or represent unnecessary downcoding.

Fathom lists health systems, physician groups, outpatient clinics, health plans, value-based care providers and RCM vendors as customers, and covers facility and professional coding as well as retrospective HCC risk-adjustment coding. The homepage cites more than 3,000 provider sites and 63 million encounters. In a March 2026 announcement, Fathom said Your Health, a senior-focused care organisation, reached a 95.5% encounter-level automation rate on athenahealth; these are vendor-reported results.

Fathom's security page states that an outside audit firm verified its HITRUST, HIPAA and SOC 2 Type 2 compliance. In May 2026 Fathom announced a strategic investment from CVS Health Ventures, adding to backers that include GV, Founders Fund and Lightspeed Venture Partners.

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CodaMetrix

specialistcodametrix.com ↗

CodaMetrix began inside Mass General Brigham. Its about page explains that the Massachusetts General Physician Organization's billing office built a tool to code complex multispecialty cases after traditional CAC and rules-based tools fell short, and the company was founded in 2019 to sell it.

The platform, CMX CARE, pulls clinical notes, including ambient documentation, registration events, surgical schedules, orders, charges and provider information from the EHR and ancillary systems. It assembles these into a longitudinal view of the patient's care across days, providers and settings, then identifies services, diagnoses, documentation gaps and missed charges. CMX Automate codes and bills cases with no human intervention; CMX Amplify routes coder-reviewed decisions back into the platform; and CMX Insights reports automation performance and upstream documentation issues. The homepage highlights radiology, pathology and endoscopy capture and an inpatient professional fee coding approach.

CodaMetrix states that CMX CARE is Epic Toolbox approved, so coders work in their native Epic environment. It also publishes Rosetta, a coding quality framework reviewed by an industry coding quality council. Vendor-reported results include a 60% reduction in coding-related denials and five times faster turnaround.

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Nym

specialistnym.health ↗

Nym sells an autonomous coding engine for health systems and physician groups. The engine runs in the background, takes a first pass at each encounter, and routes those it codes successfully straight to billing. Encounters that are missing information or need more judgment go to the coding team.

Nym's approach rests on what it calls Clinical Language Understanding (CLU), which combines machine learning with rules-based clinical ontologies. The company presents this as an alternative to black-box models: every coded encounter carries an audit trail that ties the assigned codes to supporting documentation and the coding guidelines applied, so compliance teams can verify an output before a denial or audit. A monitoring view reports accuracy, coverage and exceptions.

The engine page lists six supported specialties and service lines: emergency medicine, radiology, outpatient surgery, outpatient visits, inpatient professional services and urgent care. Nym states that it integrates with major EHR environments, holds SOC 2 Type II and ISO/IEC 27001:2022 certifications, and is HIPAA compliant. Its Inova case study reports a $1.3 million reduction in annual emergency department coding costs and a 50% drop in weekly revenue held in discharged-not-final-billed status, both vendor-reported. Nym says more than 30 health systems and physician groups use it.

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Maverick Medical AI

specialistmaverick-ai.com ↗

Maverick Medical AI sells two products that work together from documentation to billing. mCoder reads clinical reports and assigns CPT, HCPCS and ICD-10-CM codes, sending most reports directly to billing. CodePilot runs at the report screen and checks a note in seconds, flagging missing elements that would block coding or billing so the provider can fix them before signing.

The mCoder page explains that the engine is trained on two years of the customer's documentation and coding history and combines machine learning, deep learning and transformer models. Incomplete, complex or low-confidence reports are routed to the customer's team for manual coding inside the mCoder platform, and a dashboard tracks direct-to-bill rate, accuracy and exceptions. Maverick states an 85% guaranteed direct-to-bill rate, go-live in about 90 days, and quarterly accuracy audits.

All three case studies on the homepage involve imaging: Steinberg Diagnostic Medical Imaging, an unnamed imaging network with more than 100 sites, and RadNet, with about 400 sites. Maverick reports that SDMI cut coding lag from 10 to 12 days to one day; these are vendor-reported figures. The company states HIPAA compliance and SOC 2 certification on US-based AWS infrastructure.