CPT code 97803: Medical nutrition therapy reassessment billing guide

Key takeaways

CPT code 97803 covers medical nutrition therapy (MNT) reassessment and intervention, billed in 15-minute units after an initial 97802 assessment.

Medicare Part B covers 97803 for diabetes, chronic kidney disease, or post-kidney-transplant status, and only on a physician (MD or DO) referral.

MNT is a Medicare preventive service, so beneficiaries pay no Part B deductible and no coinsurance on a covered 97803 claim.

Exceeding the annual benefit cap is the top denial trigger. Medicare allows 3 hours in the first benefit year and 2 hours after.

Practice management software like Pabau converts documented session time into units and tracks each patient’s remaining benefit hours.

CPT code 97803 bills medical nutrition therapy (MNT) reassessment and intervention, individual, face-to-face with the patient, each 15 minutes.

It is the follow-up code to 97802, so it applies to every MNT visit after the initial assessment. Registered Dietitian Nutritionists (RDNs) bill it in 15-minute units against documented face-to-face time.

This guide covers the 97802 versus 97803 distinction, Medicare coverage, and the annual benefit cap. It also covers 2026 reimbursement rates, documentation, telehealth rules, and the errors that cause denials. It is written for RDNs, medical billers, and practice managers who submit MNT claims.

CPT code 97803: Definition and official description

CPT code 97803 describes: Medical nutrition therapy; reassessment and intervention, individual, face-to-face with the patient, each 15 minutes. The American Medical Association (AMA) maintains this code in the 97800 series for medical nutrition therapy services. You can verify the official descriptor through the AMA’s CPT code set overview.

97803 is a reassessment code, not an initial assessment. It applies only after a patient has already had an initial MNT session coded under 97802. Every face-to-face nutrition visit with that patient after the first one uses 97803, billed in 15-minute units.

CPT 97803 vs CPT 97802: key differences

Confusing 97802 and 97803 is the fastest way to generate a payer rejection. The two codes cover the same service category but different stages of the patient relationship. The full reference for CPT 97802 sets out how the initial assessment is scoped and timed.

A practical workflow: bill 97802 with 2 units for the 30-minute first visit. On every follow-up visit, bill 97803 with the unit count the documented time supports. Never bill 97802 again for the same patient unless a new diagnosable condition calls for a full initial assessment.

Who can bill CPT code 97803?

Medicare requires that MNT services be delivered by a Registered Dietitian Nutritionist (RDN) or a nutrition professional who meets specific credentialing requirements. Billing by an unqualified provider is a common audit trigger, so keep credential records current alongside the billing setup.

• Registered Dietitian Nutritionist (RDN): the primary eligible provider under Medicare. The RDN must hold a current credential from the Commission on Dietetic Registration (CDR).
• Licensed dietitian: eligible in states that license dietitians independently. State licensure does not replace the RDN credential for Medicare without additional MAC guidance.
• Nutrition professional enrolled with Medicare: needs an active NPI, Medicare enrollment, and acceptance of assignment. Group practices must also be enrolled at the practice level.
• Supervising physician: cannot bill 97803 under their own NPI for a service the RDN performed. The RDN bills directly, or under the appropriate group NPI.

Scope of practice for dietitians varies by state. Verify your state’s licensure requirements and your Medicare Administrative Contractor’s provider enrollment policy before you bill.

Covered diagnoses and ICD-10 codes for CPT code 97803

Medicare covers CPT code 97803 only when the patient has a covered diagnosis. Billing 97803 against a non-covered ICD-10 code guarantees a denial. The covered conditions are statutory under the Medicare MNT benefit established by the Balanced Budget Act. Check the current descriptor in the ICD-10 code library before you link a diagnosis to the claim.

Private insurers may cover MNT for additional diagnoses, including obesity (E66.x), hypertension, and eating disorders. Check each payer’s policy individually. Do not assume a private payer mirrors Medicare’s covered diagnosis list.

CPT 97803 billing units and time requirements

CPT code 97803 is a time-based code. Every unit billed must correspond to 15 minutes of face-to-face service. Billing more units than the documented time supports is a compliance violation, not a clerical slip.

• 1 unit = 15 minutes of documented face-to-face reassessment time
• Minimum threshold: at least 8 minutes of face-to-face time must be documented to bill 1 unit. Some payers apply a different midpoint rule.
• Maximum per visit: the code sets no per-visit cap, but the annual Medicare benefit limits total units across the benefit year
• Rounding: bill 1 unit for 22 documented minutes, and 2 units at 23 minutes or more, applying the midpoint rule

The annual benefit and the unit count are the same arithmetic, shown below. Three hours in the first benefit year equals 12 units across 97802 and 97803 combined. Two hours in subsequent years equals 8 units. Units spent on 97802 at the initial visit reduce the pool left for 97803 reassessments.

Medicare coverage and annual benefit for CPT 97803

Medicare Part B covers CPT code 97803 under the medical nutrition therapy benefit. Coverage is conditional, so specific requirements must be met before a claim will process. The CMS Physician Fee Schedule lookup tool lets you verify current payment amounts by locality before billing.

• Covered diagnoses: diabetes (E10 to E13), chronic kidney disease (N18.x), and post-kidney transplant (Z94.0)
• Physician referral required: a written order from a physician, meaning an MD or a DO, must be in the patient record before the service. Nurse practitioners, physician assistants, and clinical nurse specialists cannot currently refer patients for MNT. The referral must state the covered diagnosis.
• Annual benefit cap: 3 hours, or 12 units, in the first benefit year, then 2 hours, or 8 units, in each year after. The cap is shared across 97802 and 97803.
• Additional hours possible: a physician can refer for additional MNT hours where medical necessity is documented. Those hours must be ordered before the service is delivered.
• Place of service: office (POS 11), outpatient hospital (POS 22), or telehealth (POS 02 or POS 10). The POS code must match where the service occurred.
• Cost-sharing: none. MNT is a Medicare preventive service, so Medicare pays a covered 97803 claim at 100%, with no Part B deductible and no coinsurance.

According to the Centers for Medicare and Medicaid Services (CMS), MNT delivered by telehealth is covered when the other coverage criteria are met. The claim must carry the correct place-of-service code. Confirm current telehealth rules with your Medicare Administrative Contractor (MAC), because post-Public Health Emergency policy continues to change.

CPT 97803 reimbursement rates and fee schedule 2026

Medicare reimburses CPT code 97803 at roughly $30 to $45 per 15-minute unit nationally in 2026, based on available fee schedule data. Rates vary by locality through the Geographic Practice Cost Index (GPCI). Treat those figures as approximate. Confirm your own locality’s rate in the CMS fee schedule, which the 2026 final rule governs.

For practices submitting claims electronically, Claim.MD is Pabau’s US clearinghouse partner. It supports the CMS-1500 and 837P formats used for 97803 billing. It also returns real-time eligibility checks and electronic remittance advice (ERA). Reading the ERA line by line for 97803 surfaces locality rate adjustments and any systematic underpayment.

Documentation requirements for CPT 97803

Every 97803 claim needs documentation that supports the units billed. Incomplete records are a leading audit finding for MNT codes. A clinical note template built around MNT payer requirements makes it harder to close a visit with a required element missing.

• Patient identification: full name, date of birth, and the Medicare Beneficiary Identifier (MBI) or insurance ID
• Covered diagnosis: the ICD-10 code or codes, documented and linked to the service
• Physician referral: the written order in the chart, with the referring physician’s NPI, the date, and the covered diagnosis
• Session date and duration: the exact start and end time of the face-to-face reassessment, or the total time in minutes
• Nutrition assessment findings: current nutritional status, dietary intake, labs reviewed, and anthropometric data
• Intervention plan: goals discussed, dietary modifications recommended, and the patient’s response and understanding
• Progress toward prior goals: a comparison against the previous visit’s nutrition care plan
• Plan for the next visit: the follow-up timeline, plus any referrals or orders resulting from this visit
• RDN signature and credentials: including the credentialing suffix (RDN, LD, or the applicable state license)

The encounter record should carry the unit count in writing. Do not leave the billing team to reconstruct time from a session note. Write “30 minutes of face-to-face reassessment = 2 units of 97803” directly into the clinical record.

Telehealth billing for CPT 97803

CPT code 97803 is eligible for telehealth billing under Medicare when all coverage criteria are met. According to HHS telehealth guidance for nutrition services, RDNs can bill Medicare for telenutrition using 97802 and 97803.

• Place of service, not a modifier: Medicare identifies a telehealth 97803 claim by its place-of-service code. Use POS 10 when the patient is at home, and POS 02 when they are elsewhere.
• Modifier GT is retired: CMS eliminated GT for professional Medicare telehealth claims in 2018. Do not append it to a 97803 claim going to traditional Medicare.
• Modifier 95: synchronous telemedicine delivered by real-time interactive audio and video. Most Medicare Advantage and commercial payers still require 95 on a telehealth claim.
• Patient location: Medicare telehealth carries originating-site requirements. Verify the current post-PHE rules with your MAC before you bill a telehealth 97803.
• Audio-only: a telephone visit without video may not qualify for 97803 under Medicare. Check your MAC’s current policy.

Telehealth rules for MNT changed during and after the COVID-19 Public Health Emergency. Confirm current eligibility with the MAC for your jurisdiction, whether that is Novitas, Noridian, CGS, NGS, or Palmetto.

Private insurance coverage for CPT 97803

Private and commercial payers handle medical nutrition therapy billing differently from Medicare. There is no uniform standard. Coverage, prior authorization requirements, and eligible diagnoses all vary by plan.

• ACA-compliant plans: many cover MNT as preventive obesity counseling under Section 2713, but the CPT codes may differ from 97803. Confirm which codes the plan accepts.
• Employer-sponsored plans: coverage varies. Some plans cover 97803 for a broader diagnosis set than Medicare, including obesity (E66.x), hypertension, and eating disorders.
• Prior authorization: many commercial plans require prior authorization for MNT. Obtain it before you deliver the service, not after.
• Out-of-network: an RDN outside the patient’s plan can often still submit a claim, but the rate and the patient’s cost-sharing will differ.

When you verify benefits for 97803, ask the payer four specific questions rather than a general coverage question.

• Which CPT codes are covered for MNT under this plan?
• Which diagnoses qualify for those codes?
• Is prior authorization required, and for how many visits?
• What is the annual visit limit or dollar limit?

A general nutrition counseling benefit does not always map to 97803. Get the covered code list in writing before the first visit.

Common billing errors and denial prevention for CPT 97803

Denials on 97803 claims follow predictable patterns, and most are preventable. The checks that catch them belong before the claim goes out, not after the rejection arrives. Five elements are worth confirming on every billing run.

How practice management software simplifies CPT 97803 billing

Tracking 15-minute units, annual benefit hours, and per-patient referral records by hand creates significant administrative load for RDN practices. Pabau’s automated claims management software takes that work off the billing team. Session time logged at the point of care becomes a unit count, and each patient’s remaining benefit hours sit on their record.

• Time-unit automation: session duration logged at the point of care converts straight into billable units, so 97803 counts are not worked out by hand
• Annual benefit tracking: per-patient benefit year tracking flags a patient approaching the Medicare cap before the visit is billed
• Documentation templates: MNT clinical note templates capture the diagnosis, referral, intervention plan, and session time in one workflow
• Claim submission: electronic submission through the Claim.MD clearinghouse supports CMS-1500 and 837P, with real-time eligibility and ERA reconciliation
• Denial workflow: denial tracking ties ERA adjustment reason codes to specific claim lines, so repeated 97803 unit errors surface quickly

Automate your MNT billing workflows

Pabau tracks time-based CPT units, holds your MNT documentation templates, and submits claims electronically. Your team spends less time reconciling units and more time with patients.

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Conclusion

97803 is a simple code with a strict envelope around it. The service itself is 15 minutes of documented reassessment. The envelope is a physician referral, a covered diagnosis, and a shared annual cap that 97802 has already drawn on.

So the decision worth making now is where the referral, the covered diagnosis, and the running minute total live. Keep all three on the patient record and the unit count writes itself. Keep them in three separate places and someone has to reconstruct them under audit.

Book a demo to see how Pabau tracks MNT units and remaining benefit hours against each patient record, before the claim ever goes out.

Continue your research

Need to know what belongs on the encounter record? Superbill documentation sets out the billing elements every MNT encounter record has to carry.

Claims coming back rejected? Denial management in healthcare covers how to build a systematic response to payer rejections and spot recurring patterns.

Want the checks that stop a rejection before it happens? Clean claim submission explains what has to be right on a claim for it to pay on the first pass.

Submitting electronically to Medicare or commercial payers? Claim.MD clearinghouse guide explains how a clearinghouse validates a claim before it reaches the payer.

Worried about an MNT audit? Medical billing compliance walks through the documentation standards that time-based codes are held to.

Frequently asked questions