Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.30
    OpenPayerBilling CodesGeneral symptoms and signsICD-10-CM r63-symptoms-and-signs-concerning-food-and-fluid-intake
    Ask Trek AI about this page

    ICD-10-CM Code For Symptoms And Signs Concerning Food And Fluid Intake: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group R63 includes symptoms and signs related to food and fluid intake such as abnormal weight loss, polyphagia, anorexia, excessive thirst, and feeding difficulties. These ICD-10-CM diagnosis codes are used to document clinical scenarios where patients present with intake-related symptoms, capturing severity, nutritional impact, and associated systemic involvement. Accurate coding within the ICD-10-CM R63 group supports proper claim adjudication and complete clinical documentation.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Symptoms And Signs Concerning Food And Fluid Intake: Group Overview policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    ICD-10-CM R63: Symptoms And Signs Concerning Food And Fluid Intake Overview

    The diagnoses in this group capture clinical signs and symptoms related to problems with eating, drinking, and maintaining adequate nutrition and hydration. They target functional and symptomatic presentations affecting intake, weight, and nutritional status across multiple body systems. Accurate coding is important for clinical records and supports appropriate reimbursement by reflecting the complexity of care required.

    Table of contents

    Progress1 / 6

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • Facility ComparisonBeds, revenue & payer mix
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    When to Use

    Use a code from this group when a patient presents with documented symptoms related to food or fluid intake that are the focus of evaluation or treatment. Select the code that most precisely describes the symptom and its severity as documented in the clinical record.

    ICD-10-CM Codes

    11 rows

    ICD-10-CM CodeDescription
    R63.0Anorexia
    R63.1Polydipsia
    R63.2Polyphagia
    R63.30Feeding difficulties, unspecified
    R63.31Pediatric feeding disorder, acute
    R63.32Pediatric feeding disorder, chronic
    R63.39Other feeding difficulties
    R63.4Abnormal weight loss
    R63.5Abnormal weight gain
    R63.6Underweight
    R63.8Other symptoms and signs concerning food and fluid intake

    DRG Codes

    2 rows

    DRG CodeDescription
    640Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes with MCC
    641Miscellaneous Disorders of Nutrition, Metabolism, Fluids and Electrolytes without MCC

    Typical Clinical Scenarios

    • An elderly nursing home resident with progressive unintentional weight loss over several months, decreased appetite, and frailty is evaluated by a primary care clinician for failure to thrive and poor oral intake; history and exam exclude acute illness, and the clinician documents decreased appetite and weight loss as primary concerns, leading to assignment of codes indicating anorexia or malnutrition-related insufficient intake. Typical codes: R63.0, R63.4
    • A middle-aged patient presents to the emergency department with two days of persistent vomiting and inability to tolerate oral fluids, leading to signs of dehydration (tachycardia, low blood pressure, and dry mucous membranes); the ED documents decreased oral intake and fluid loss resulting in volume depletion, so a code for dehydration or reduced oral intake is assigned alongside treatment for acute fluid deficit. Typical codes: R63.2, R63.6
    • A young adult with a chronic neurological disorder (e.g., advanced Parkinson disease) is seen in clinic for ongoing difficulties with chewing and swallowing, resulting in reliance on modified diets and observed weight loss; the clinician documents dysphagia and inadequate nutrition from impaired feeding, prompting assignment of a code reflecting feeding difficulties and undernourishment as a comorbidity impacting disease management. Typical codes: R63.31, R63.4

    Related Codes

    R50-FEVER-OF-OTHER-AND-UNKNOWN-ORIGIN

    ICD-10-CM Code For Fever Of Other And Unknown Origin: Group Overview

    R51-HEADACHE

    ICD-10-CM Code For Headache: Group Overview

    R52-PAIN-UNSPECIFIED

    ICD-10-CM Code For Pain Unspecified: Group Overview

    R53-MALAISE-AND-FATIGUE

    ICD-10-CM Code For Malaise And Fatigue: Group Overview

    R54-AGE-RELATED-PHYSICAL-DEBILITY

    ICD-10-CM Code For Age Related Physical Debility: Group Overview

    R55-SYNCOPE-AND-COLLAPSE

    ICD-10-CM Code For Syncope And Collapse: Group Overview

    R56-CONVULSIONS-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Convulsions Not Elsewhere Classified: Group Overview

    R57-SHOCK-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Shock Not Elsewhere Classified: Group Overview

    R58-HEMORRHAGE-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Hemorrhage Not Elsewhere Classified: Group Overview

    R59-ENLARGED-LYMPH-NODES

    ICD-10-CM Code For Enlarged Lymph Nodes: Group Overview

    Showing 1–10 of 17

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.