Certified Professionals

Medical Coding Services

Medical coding converts documented clinical care into the ICD-10, CPT and HCPCS codes payers reimburse against. Coding errors cause underpayment as often as denial. Vizora's certified coders assign codes to specialty standards and audit their own work before submission.

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What’s included

ICD-10-CM diagnosis coding — Accurate diagnosis coding to the highest level of specificity the documentation supports.
CPT & HCPCS procedure coding — Procedure and supply coding across surgical, diagnostic and E/M services.
Modifier management — Correct application of modifiers 25, 59, 51, and the specialty-specific set that drives your reimbursement.
E/M level validation — Every evaluation and management level checked against 2021+ documentation guidelines.
Quality audits — Routine internal audits measuring coding accuracy and flagging drift before a payer finds it.
Documentation feedback — Specific, provider-level guidance on the documentation gaps costing you money.

The problem

Where medical coding goes wrong

Undercoding that quietly forfeits earned revenue on every encounter

Upcoding exposure that invites payer audits and recoupment

Modifier misuse triggering avoidable denials

Annual ICD-10 and CPT updates outpacing internal training

Documentation that does not support the level of service billed

No independent audit to catch systematic coding drift

How it works

Our medical coding process

Documentation review

Coders review the clinical note against the services billed to confirm support for every code.

Code assignment

ICD-10, CPT, HCPCS and modifiers are assigned to specialty and payer standards.

Second-level audit

A sample of every coder's work is independently re-reviewed for accuracy before submission.

Feedback loop

Documentation gaps are reported back to providers so the fix is upstream, not repeated.

Outcomes

What changes for your practice

We baseline these during the free audit so improvement is measured against your actual starting point, not an industry average.

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Reimbursement that matches the care actually delivered
Reduced audit and recoupment exposure
Fewer modifier and medical-necessity denials
Coders current on annual code set changes
Independent audit trail for compliance
Provider-level documentation coaching

Specialty coverage

Medical Coding by specialty

Each specialty fails differently. These pages cover the specific codes, denial patterns and payer rules that apply.

Cardiology Dermatology Orthopedics OB-GYN Pediatrics Family Medicine

Questions

Medical Coding FAQ

Last updated August 20, 2026

Reviewed by a certified coding lead

Our coders are certified, and they are assigned by specialty rather than pooled — so the person coding your cardiology claims codes cardiology every day. Coding is audited internally on a sample basis rather than assumed correct.

ICD-10-CM and CPT updates take effect October 1 and January 1 respectively. Our coders complete mandatory update training before each effective date, and our claim edits are updated in the same cycle so nothing submits against a retired code.

Yes. A baseline coding audit is part of the free billing audit. We sample recent encounters, compare codes billed against documentation, and quantify both undercoding losses and overcoding exposure.

Undercoding is your practice billing a lower level than the documentation supports, forfeiting revenue voluntarily. Downcoding is the payer unilaterally reducing the level you billed. Both cost money; the fixes are different, and we address each separately.

Terms used on this page

CPT Code

A CPT code is a five-character code maintained by the American Medical Association that identifies the procedure or service a provider performed. CPT answers what was done; ICD-10-CM answers why. Together they establish medical necessity, and a mismatch between them is a leading denial cause.

ICD-10-CM

ICD-10-CM is the diagnosis code set used in the United States to report the clinical reason for a service. Codes run three to seven characters, and the later characters carry specificity — laterality, encounter type, episode — that payers increasingly require before they will accept medical necessity.

HCPCS

HCPCS Level II is a CMS-maintained code set covering products, supplies and services not included in CPT — durable medical equipment, prosthetics, ambulance services, and drugs administered in a clinical setting. Level I of HCPCS is CPT itself.

Modifier

A modifier is a two-character suffix appended to a CPT or HCPCS code that alters its meaning without changing the code itself — signalling that a service was distinct, bilateral, repeated, reduced or performed by a specific provider role. Modifiers are how correct coding survives contact with bundling edits.

E/M Coding

Evaluation and management coding assigns a level of service to a patient encounter based on either medical decision making or total time spent on the date of the encounter. Since the 2021 guideline revision, history and exam no longer determine the level for office visits.

NCCI Edits

National Correct Coding Initiative edits are CMS-published rules preventing improper code pairings. Procedure-to-procedure edits stop two codes being billed together when one is a component of the other; medically unlikely edits cap the units of a code reportable for one patient on one day.

Still deciding how to run billing at all? Compare in-house against outsourced or read the full set of comparisons.

Related services

Medical Billing & Coding

Complete billing and coding built to maximize reimbursement and reduce denials.

Claims Management

Advanced scrubbing, real-time tracking and data-driven submission strategy.

Denial Management

Root-cause analysis, strategic appeals, and prevention that compounds.

Find out what your denials are costing you

A free billing audit reviews your denial rate, AR aging and clean claim rate against industry benchmarks. Takes about two minutes to request. No sales pitch.