2026 ICD-10-CM Diagnosis Code R13.0Aphagia

ICD-10-CM Codes›R00–R99›R10-R19›R13

ICD-10-CM R13.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

R13.0 is a billable ICD-10-CM diagnosis code for aphagia. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 391 through 392. 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 Abdominal pain and other digestive/abdomen signs and symptoms.

Code Identity

ICD-10-CM Code
R13.0
Billable Status
Yes — Valid for Submission
Code Describes
Aphagia
Short Description
Aphagia
Same as the full description in the CMS dataset.
Parent Code
R13
Aphagia and dysphagia

Code Classification

ChapterR00–R99Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
SectionR10-R19Symptoms and signs involving the digestive system and abdomen
CategoryR13Aphagia and dysphagia
This CodeR13.0Aphagia

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Absent deglutition
  • Aphagia
  • Finding related to ability to initiate swallowing reflex
  • Finding related to ability to swallow saliva
  • Finding related to ability to swallow soft foods
  • Finding related to ability to swallow solids
  • Finding related to ability to swallow thickened fluid
  • Unable to initiate swallowing
  • Unable to swallow
  • Unable to swallow fluid
  • Unable to swallow food
  • Unable to swallow saliva
  • Unable to swallow soft foods
  • Unable to swallow solids
  • Unable to swallow thickened fluid

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Inability to swallow

Type 1 Excludes

  • psychogenic aphagia F50.9

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Aphagia
    • Deglutition
      • paralysis
    • Paralysis, paralytic(complete) (incomplete)
      • deglutition

Clinical ClassificationClinical

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

CCSR SYM006
Abdominal pain and other digestive/abdomen signs and symptoms
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Swallowing Disorders

If you have a swallowing disorder, you may have difficulty or pain when swallowing. Some people cannot swallow at all. Others may have trouble swallowing liquids, foods, or saliva. This makes it hard to eat. Often, it can be difficult to take in enough calories and fluids to nourish your body.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert R13.0 to ICD-9-CMHistory

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

ICD-9-CM
787.20 Dysphagia NOS
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About R13.0Overview

Is R13.0 (Aphagia and dysphagia) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report aphagia on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does R13.0 group to?

When aphagia is the principal diagnosis on an inpatient stay, it groups to MS-DRG 391, 392, with relative weights from 0.7796 to 1.2683 depending on complications. Higher weights mean higher Medicare reimbursement.

Can R13.0 be a principal diagnosis?

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

What is the ICD-9 equivalent of R13.0?

Under the General Equivalence Mappings, aphagia converts to ICD-9-CM 787.20 (dysphagia NOS). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.