2027 ICD-10-CM Diagnosis Code R63.2Polyphagia

ICD-10-CM Codes›R00–R99›R50-R69›R63

ICD-10-CM R63.2
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

R63.2 is a billable ICD-10-CM diagnosis code for polyphagia. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 640 through 641. As a symptom code, it should not be used as a principal diagnosis once a related definitive diagnosis has been established. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other general signs and symptoms.

Code Identity

ICD-10-CM Code
R63.2
Billable Status
Yes — Valid for Submission
Code Describes
Polyphagia
Short Description
Polyphagia
Same as the full description in the CMS dataset.
Parent Code
R63
Symptoms and signs concerning food and fluid intake

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR50-R69General symptoms and signs
CategoryR63Symptoms and signs concerning food and fluid intake
This CodeR63.2Polyphagia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of hyperalimentation
  • Early-onset obesity, hyperphagia, severe developmental delay syndrome
  • Enteral nutrition infusion finding
  • Excessive appetite
  • Excessive bioactive substance intake
  • Excessive eating
  • Excessive enteral nutrition infusion
  • Excessive oral intake
  • Finding of quantity of appetite
  • Finding of quantity of eating
  • Greediness
  • Hyperthermia-hyperphagia-hypothyroidism syndrome
  • Increased appetite
  • Neurological disorder due to excess intake of macronutrients
  • Neurological disorder due to excess intake of micronutrients
  • Occasional overeating
  • Overeating
  • Severe obesity

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to R63.2: its own notes plus those printed at R63 and Chapter 18. A note printed at a category, block or chapter applies to every code under it.

Applicable To

Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.

  • Excessive eating
  • Hyperalimentation NOS

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From R63 Symptoms and signs concerning food and fluid intake applies to 11 codes

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • abnormal findings on antenatal screening of mother (O28.-)
  • certain conditions originating in the perinatal period (P04-P96)
  • signs and symptoms classified in the body system chapters
  • signs and symptoms of breast (N63, N64.5)

Notes

General instructions on how these codes are used.

From Chapter 18 (R00-R99) Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified applies to 774 codes
  • This chapter includes symptoms, signs, abnormal results of clinical or other investigative procedures, and ill-defined conditions regarding which no diagnosis classifiable elsewhere is recorded.
  • Signs and symptoms that point rather definitely to a given diagnosis have been assigned to a category in other chapters of the classification. In general, categories in this chapter include the less well-defined conditions and symptoms that, without the necessary study of the case to establish a final diagnosis, point perhaps equally to two or more diseases or to two or more systems of the body. Practically all categories in the chapter could be designated 'not otherwise specified', 'unknown etiology' or 'transient'. The Alphabetical Index should be consulted to determine which symptoms and signs are to be allocated here and which to other chapters. The residual subcategories, numbered .8, are generally provided for other relevant symptoms that cannot be allocated elsewhere in the classification.
  • The conditions and signs or symptoms included in categories R00-R94 consist of:
  • (a) cases for which no more specific diagnosis can be made even after all the facts bearing on the case have been investigated;
  • (b) signs or symptoms existing at the time of initial encounter that proved to be transient and whose causes could not be determined;
  • (c) provisional diagnosis in a patient who failed to return for further investigation or care;
  • (d) cases referred elsewhere for investigation or treatment before the diagnosis was made;
  • (e) cases in which a more precise diagnosis was not available for any other reason;
  • (f) certain symptoms, for which supplementary information is provided, that represent important problems in medical care in their own right.

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name R63.2, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming R63.2: they are not reported together with it, unless the two conditions are unrelated.

  • E67 Other hyperalimentation
    hyperalimentation NOS (R63.2)
  • F50 Eating disorders
    polyphagia (R63.2)

Use Additional Code 1

These codes say to use an additional code from the note, and R63.2 is one of the codes named.

  • E88.82 Obesity due to disruption of MC4R pathway
    code, if applicable, to identify associated manifestations, such as polyphagia (R63.2)

Code Also 1

These codes say R63.2 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • Z15.2 Genetic susceptibility to obesity
    polyphagia (R63.2)

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR SYM016
Other general signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Hyperphagia

    ingestion of a greater than optimal quantity of food.

Convert R63.2 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
783.6 Polyphagia
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About R63.2Overview

What is the ICD-10 code for polyphagia?

The ICD-10-CM code for polyphagia is R63.2 (sometimes written as R632). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is R63.2 (Symptoms and signs concerning food and fluid intake) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report polyphagia on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does R63.2 group to?

When polyphagia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 641, 640, with relative weights from 0.7864 to 1.3392 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R63.2 be a principal diagnosis?

Use it with care. This is a symptom code, so once a definitive diagnosis explaining the polyphagia is established, that condition takes the principal position instead.

Can R63.2 be reported with a code from F50.2?

Not as a rule. The Excludes1 note at R63, which applies to R63.2, lists "bulimia NOS (F50.2-)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).