Coding Guidelines for Medical Nutrition Therapy (MNT)

Service Code Description Applicable Codes

*Dietetic treatment of eating disorders.

Refer to HMSA’s Dietetic Treatment for Eating Disorders policy.

97802 Medical nutrition therapy; initial assessment and intervention, individual, face to face with the patient, each 15 minutes F50.00, F50.010, F50.011, F50.012, F50.013, F50.014, F50.019, F50.020, F50.021, F50.022, F50.023, F50.024, F50.029, F50.20, F50.21, F50.22, F50.23, F50.24, F50.25, F50.810, F50.811, F50.812, F50.813, F50.814, F50.819, F50.82, F50.89, F50.9
97803 Medical nutrition therapy; re-assessment and intervention, individual, face to face with the patient each 15 minutes
97804 Medical Nutrition Therapy; group (2 or more individual(s)), each 30 minutes
S9470 Nutritional counseling, dietitian visit

*Obesity.

Refer to Preventive Health Guidelines for Newborns and Children, Men, and Women.

97802 Medical nutrition therapy; initial assessment and intervention, individual, face to face with the patient, each 15 minutes

Primary Dx:

Z04.6, Z13.1

E66.01-E66.1

E66.8-E66.9.

97803 Medical nutrition therapy; re-assessment and intervention, individual, face to face with the patient each 15 minutes
97804 group (2 or more individual(s)) each 30 minutes
S9470 Nutritional counseling, dietitian visit

Healthy Diet for cardiovascular risk factors.

Refer to Preventive Health Guidelines for Newborns and Children, Men, and Women.

97802 Medical nutrition therapy; initial assessment and intervention, individual, face-to-face with the patient, each 15 minutes

Z71.3 with one of these additional diagnoses:

E10.10-E10.9, E11.00-E11.9, E13.00-E13.9, E66.01, E66.09, E66.3, E75.6, E78.00, E78.70, E78.1, E78.2, E78.79, E78.89, E78.9, E88.810, E88.811, E88.818, E88.819, E88.89,

I10, I11.0, I11.9,

R73.01-R73.03, R73.09, R73.9

97803 re-assessment and intervention, individual, face-to-face with the patient, each 15 minutes
97804 group (2 or more individual(s)) each 30 minutes
S9452 Nutrition classes, nonphysician provider, per session
S9470 Nutritional counseling, dietitian visit

Patient has been diagnosed with certain inborn errors of metabolism.

See HMSA’s Medical Foods for inborn Errors of Metabolism.

This service is limited to 4 visits per calendar year.

Please refer to the MNT policy for more information.

97802 Medical nutrition therapy; initial assessment and intervention, individual, face-to-face with the patient, each 15 minutes

E70.0 – E70.9,

E71.0-E71.39,

E72.00-E72.9

97803 re-assessment and intervention, individual, face-to-face with the patient, each 15 minutes
97804 group (2 or more individual(s)) each 30 minutes

Swallowing impairment or malnutrition due to head or neck cancer (e.g. Oral surgery related to head or neck cancer).

This service is limited to 4 visits per calendar year.

Please refer to the MNT policy for more information.

97802 Medical nutrition therapy; initial assessment and intervention, individual, face-to-face with the patient, each 15 minutes

E43, E44.0, E44.1, E46, R13.10

with one of these additional diagnoses:

C02.0,

C08.0,

C10.0,

C32.0-C32.9

D10.6.

97803 re-assessment and intervention, individual, face-to-face with the patient, each 15 minutes
97804 group (2 or more individual(s)) each 30 minutes

Ketogenetic diet

This service is limited to eight (8) visits in the first 24 months and four (4) visits each year thereafter.

97802 Medical nutrition therapy; initial assessment and intervention, individual, face-to-face with the patient, each 15 minutes E74.4, E88.09, G40.001, G40.011, G40.019, G40.101, G40.111, G40.201, G40.211, G40.301, G40.311, G40.A01, G40.A11, G40.B01, G40.B11, G40.401, G40.411, G40.419, G40.501, G40.801, G40.803, G40.804, G40.811, G40.813, G40.821, G40.823, G40.823, G40.841, G40.842, G40.843, G40.844, G40.901, G40.911. G93.45
97803 re-assessment and intervention, individual, face-to-face with the patient, each 15 minutes
97804 group (2 or more individual(s)) each 30 minutes

Chronic kidney disease (CKD) with a glomerular filtration rate (GFR) less than 45, i.e., non-dialysis G3b, G4, and G5.

This service is limited to 4 visits per calendar year.

Please refer to the MNT policy for more information.

97802 Medical nutrition therapy; initial assessment and intervention, individual, face-to-face with the patient, each 15 minutes N18.30, N18.31, N18.32, N18.4, N18.5.
97803 re-assessment and intervention, individual, face-to-face with the patient, each 15 minutes
97804 group (2 or more individual(s)) each 30 minutes
Codes that do not meet payment determination criteria. MNT billed for these services will be denied not medically necessary. Please see the MNT policy for more information. 97802 Medical nutrition therapy; initial assessment and intervention, individual, face-to-face with the patient, each 15 minutes F51.0 - F99, G20-G21.2, G30.0, S38.1xxA, S38.1xxD, S38.1xxS.
97803 re-assessment and intervention, individual, face-to-face with the patient, each 15 minutes
97804 group (2 or more individual(s)) each 30 minutes

*Precertification is required. Please refer to the HMSA medical policy.

For more information, please refer to HMSA’s Medical Nutrition Therapy policy.


Revision History

Date Nature of Revision
08/03/2026 Migrated to new platform.