The Beginners Guide to Insurance Billing Codes For Dietitians

Navigating insurance in your private practice can be confusing. Evolving legislation and coverage for telehealth services only further complicates the matter.

Whether you are in-network with insurance companies or create superbills for your clients, it is beneficial to be well-acquainted with insurance codes. This way, you’ll save time every instance you create a claim.

Here at Healthie, we hear a lot of questions from our nutrition community about which CPT and ICD-10 codes to use for documentation. 

Here’s what you need to know about insurance billing codes for dietitians:


ICD-10 Diagnosis Codes

ICD stands for “International Classification of Diseases. These codes are used by physicians and medical coders to assign medical diagnoses to individual patients. Registered dietitians cannot make medical diagnoses. However, these codes are used on CMS 1500 forms, referrals, and superbills.

Common ICD-10 diagnosis codes you will see on referrals are:

  • Z71.3 – Dietary counseling and surveillance (typically used for preventative services)
  • E11.___ –Type 2 Diabetes (the ___  specifies if any complications are present)
  • E66.0 – Obese due to excess calories
  • E66.3 – Overweight (weight management referrals)

More information and a complete list of common ICD-10 codes was published by the Academy of Nutrition and Dietetics.

Healthie Superbill Excerpt

CPT Codes

CPT, or Current Procedural Terminology, codes are the codes that identify the service you provided as a healthcare professional.

The three most common medical nutrition therapy (MNT) codes that dietitians use on claims are listed below. Public insurers, like Medicare and Medicaid, as well as private insurance carriers, can use these CPT codes.

  • 97802 – For an initial assessment, face-to-face
  • 97803 – For a follow up visit or reassessment, face-to-face
  • 97804 – For a group visit (2 or more individuals)

When creating a superbill or filling out a CMS 1500 form, you will also have to specify the number of units and your fee per unit. Keep in mind, insurance billing is in units of 15 minutes each. This means a 1-hour initial assessment is 4 units.


Telehealth Codes

One common question we receive is, “Does my claim change if submitting an insurance claim for telehealth services?” The answer is yes!

First, you (or your client) should always check with the insurance company to evaluate coverage for virtual services. Then, when filing your claim, it is necessary to add a modifier to the end of the CPT code for video counseling services.

The two most commonly used modifiers are: 

  • GQ – Asynchronous Telecommunications systems, such as a pre-recorded video
  • GT – Interactive Audio and Video Telecommunications systems, including a live video conferencing session

Many insurance companies are rapidly changing their coverage for telecommunications, so always perform an eligibility check before providing your services.


G Codes

Most insurance companies limit the number of sessions covered per calendar year. If a client exhausts their benefits, and their referring physician determines a change in diagnosis that requires your service, you will use G codes to bill for the rest of the year.

The most common G codes are:

  • G0270 – 15-minute one-on-one session for a reassessment due to a new or change in diagnosis
  • G0271 – 30-minute group session for a reassessment due to a new or change in diagnosis

You can find out more about G codes here.


This is not a recommendation to use any of these codes for your documentation. Please ask insurance companies you are in-network with for the latest updates and preferences. Insurance billing varies from company to company and, state to state. This list is a glimpse at the frequently-used codes.


For more information on insurance billing and coding, please visit these resources:


Chelsey Amer, MS, RDN, CDN is a New York City-based registered dietitian nutritionist with a Masters in Clinical Nutrition from New York University. Chelsey started her virtual nutrition private practice in 2016 to help women find their food freedom and feel their best with mindful weight management techniques. Chelsey runs a successful food blog,, where you can find deliciously nutritious, simple, food allergy friendly recipes. As a member of the marketing and partnerships team at Healthie, Chelsey spends most of her days writing, speaking with members of the Healthie community, and hanging out on social media!

12 Responses

  1. great post for medical coders like me…i knew about the ICD 10 codes for diabetes and obesity..but I learnt about the CPT codes used for medical nutrition therapy along with the modifiers..thanks for sharing this valuable content…!!

  2. I love the information. I’m inquiring what if the RD would like to provide the services in collaboration with a gym, how would they bill their place of service?

  3. Question! Can you typically bill 6 units per session?

  4. Does the ICD 10 code “ANTEX 2” exist for dietitians?

    It was for a “Nutritional assessment, counselling and/or treatment. Duration: 61-

    The procedure code: “84206” was used.

    My insurance company are saying that the ANTEX 2 code does not exist.

  5. Hi,

    Where can I fine all dietians codes with the fees listed?

    Thank you

    1. Hi Dee, thanks for reaching out. We unfortunately can’t provide you with specific billing codes and rates, but can connect you with the right resources to ask. Email us at for more information.

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