Risk Adjustment / HCC Coding

Risk adjustment is a method health plans and programs use to estimate how much care a group of patients is expected to need. In Medicare Advantage, this relies on diagnoses reported on claims and encounters. Hierarchical condition category (HCC) coding is the work of reporting those diagnoses accurately and completely.

Risk adjustment HCC coding services review charts, check that each chronic condition is supported in the record, and report only what the documentation shows. Westmont Revenue Partners connects practices, groups, and plans with vetted billing experts who do this work. Models and rules change by year, so good providers check current CMS and payer guidance.

Who this is for

Primary care, internal medicine, geriatrics, and other groups with many Medicare Advantage patients
Groups in value-based or capitated contracts with health plans
Specialists who manage chronic conditions, such as cardiology, nephrology, or endocrinology
Practices that want help with documentation habits and provider education
Organizations preparing for payer audits of submitted diagnoses
Groups with no in-house coders who know risk adjustment

What's included

Prospective chart review before visits to find conditions that need a fresh assessment
Retrospective review of completed encounters for missed or unsupported diagnoses
Diagnosis coding to the highest level of specificity the record supports
Checking that each reported diagnosis is tied to an eligible encounter and provider type
Clinical documentation queries to providers when notes are unclear
Provider education on documenting status, evaluation, and plan for chronic conditions
Review of problem lists to remove conditions that are no longer active
Reconciliation of coded diagnoses against payer gap or suspect reports
Audit-readiness reviews and record retrieval support
Reporting on capture rates by provider and condition

How it works

The billing expert learns which payers and models apply to your patients.
They review a sample of charts to see current documentation habits.
They build a workflow for pre-visit review, coding, and provider queries.
Coders review charts against the record and report only supported diagnoses.
Providers get feedback and short training on common gaps.
The team reviews results, adjusts the process, and supports any payer audit requests.

Common challenges

Unsupported diagnoses. A condition on a problem list is not enough. Experienced coders look for evidence that the provider evaluated or managed it at the visit.
Eligible encounter rules. Not every visit or provider type counts toward risk adjustment. Coders check current payer and CMS lists of eligible sources before reporting.
Telehealth encounters. Rules on which virtual visits count have changed over time. A careful biller checks current guidance rather than assuming.
Specificity. Vague codes may not map to a condition category. Coders use provider queries to get the detail the record can support.
Annual reset. Conditions generally need to be documented again each year. Pre-visit planning helps providers reassess chronic conditions on schedule.
Over-coding risk. Pressure to raise scores can lead to unsupported claims. Reputable teams code to the record, not to a target.
Model changes. CMS updates its models and code mappings over time. Teams track the version that applies to each payer and year.
Provider buy-in. Busy clinicians may see this as extra work. Short, specific feedback tied to their own charts works better than general training.

Metrics worth tracking

Chart review coverage, which shows how much of your panel is checked
Diagnosis capture rate for chronic conditions, which shows documentation gaps
Query rate and response rate, which show how clear provider notes are
Coding accuracy from internal audits, which shows quality
Risk score trends by payer and provider, interpreted with care
Audit findings, which show where diagnoses lacked support

Specialties that use this service

How Westmont can help

We match you with vetted billing experts experienced in risk adjustment and HCC coding
We look for coders who know your specialty, payers, and EHR
We help you describe your goals so providers can propose a fitting scope
We focus on accurate documentation, not on raising scores. We do not give compliance advice

Frequently asked questions

What is an HCC?

An HCC, or hierarchical condition category, groups related diagnoses into a category used in some risk adjustment models. Medicare Advantage uses these categories to estimate expected care needs. Which diagnoses map to which categories depends on the model version, so check current CMS mappings.

Does HCC coding change how a practice is paid?

Under traditional fee-for-service, usually not directly. It matters most in Medicare Advantage, accountable care, and other risk-based contracts, where payers use diagnosis data to set payments or compare performance. Ask your payers how your contracts use risk scores.

Why can't we just code from the problem list?

Payers and auditors generally expect each diagnosis to be supported by documentation from an eligible encounter. A problem list alone often does not show that the condition was evaluated. Coders review the full note and query the provider when needed.

How often should risk adjustment charts be reviewed?

Diagnoses generally need to be captured each year, so many practices review before visits and again after. The right rhythm depends on your volume and contracts. A billing expert can suggest a schedule after seeing your workflow.

Is risk adjustment coding the same as regular medical coding?

It uses the same code sets, but the goal differs. Regular coding supports claim payment for a visit. Risk adjustment coding focuses on complete, supported reporting of chronic conditions over the year. Many teams use both skills.

Related services

See what simpler billing looks like

Tell us about your practice and we will connect you with vetted billing experts. Contact Westmont for a quote.

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