Poor Oral Intake ICD-10-CM Codes | 2023

Looking for ICD-10 codes used for poor oral intake? Check out this guide to learn about codes’ clinical information, billability, synonyms, etc.

By RJ Gumban on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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What ICD-10 codes are used for poor oral intake?

Poor oral intake is a common clinical condition that refers to a patient's inability or reduced ability to consume foods and fluids orally.

Oftentimes, practitioners use R63.8: Other symptoms and signs concerning food and fluid intake, under the code range R00-R99: Symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classified, as the ICD code for poor oral intake. If you or your fellow healthcare practitioners plan on using this code, note that it cannot be used as a principal diagnosis.

However, in certain circumstances, they may also find that they may use other codes related to poor oral intake that have symptoms concerning food and fluid intake, such as:

R63.0: Anorexia
R63.1: Polydipsia
R63.2: Polyphagia
R63.4: Changes in appetite
R63.6: Abnormal weight gain

Which poor oral intake ICD codes are billable?

The ICD codes for or related to poor oral intake are billable.

Clinical information

Poor oral intake may result from various underlying physical and psychological conditions systemic inflammatory response syndrome (SIRS), anorexia nervosa, bulimia (NOS), etc. It's a common issue in palliative care patients.
If left unmanaged or untreated, poor oral intake can lead to malnutrition, dehydration, abnormal weight loss, and other health complications.
Patients who have poor oral intake may have general symptoms like weight loss and feeding difficulties.
Determining the cause and severity of poor oral intake involves clinical evaluation, including checking one's medical history and conducting a physical examination.
There are various methods to treat or manage poor oral intake in a patient, such as making dietary modifications, oral nutrition support, enteral tube feeding, and parenteral nutrition.

Synonyms include

Inadequate oral intake
Oral intake insufficiency
Impaired oral nutrition
Insufficient dietary intake
Reduced oral food and fluid consumption

Commonly asked questions

Healthcare practitioners can use a poor oral intake ICD code when determining the cause and severity of the condition with a clinical evaluation.

Yes, all of the ICD-10 codes about or are related to poor oral intake are billable.

Common treatments include dietary modifications, enteral tube feeding, or parenteral nutrition.

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