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  6. 2024 ICD-10-CM Code R64
Version 2024
Replaced Code
Billable Code
No Valid Principal Dx
MS-DRG Mapping
Convert to ICD-9

2024 ICD-10-CM Diagnosis Code R64

Cachexia

ICD-10-CM Code:
R64
ICD-10 Code for:
Cachexia
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

Code Classification

  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
    (R00–R99)
    • General symptoms and signs
      (R50-R69)
      • Cachexia
        (R64)

R64 is a billable diagnosis code used to specify a medical diagnosis of cachexia. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Abnormal weight loss
  • Abnormal weight loss
  • Abnormal weight loss associated with AIDS
  • Abnormal weight loss associated with AIDS
  • AIDS wasting syndrome
  • Cachexia
  • Cachexia
  • Cachexia
  • Cachexia
  • Cachexia
  • Cachexia associated with AIDS
  • Café au lait spots
  • Cardiac cachexia
  • Diffuse dermatitis
  • Distribution of body fat loss - finding
  • Distribution of body fat loss - finding
  • Distribution of body fat loss - finding
  • Distribution of body fat loss - finding
  • Distribution of body fat loss - finding
  • Emaciated
  • Facial dysmorphism, anorexia, cachexia, eye and skin anomalies syndrome
  • Inanition
  • Malignant cachexia
  • Muscle cachexia
  • Severe dermatitis, multiple allergies, metabolic wasting syndrome
  • Severe systemic illness tissue wasting

Clinical Classification

Clinical Information

  • Cachexia

    general ill health, malnutrition, and weight loss, usually associated with chronic disease.

Replaced Code

This code was replaced in the 2024 ICD-10-CM code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2023. This code was replaced for the FY 2024 (October 1, 2023 - September 30, 2024).


  • E88.A - Wasting disease (syndrome) due to underlying condition

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • abnormal weight loss R63.4
  • cachexia due to underlying condition E88.A
  • nutritional marasmus E41

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Convert R64 to ICD-9-CM

  • ICD-9-CM Code: 799.4 - Cachexia

Patient Education


Malnutrition

Food provides the energy and nutrients you need to be healthy. If you don't get enough nutrients -- including proteins, carbohydrates, fats, vitamins, and minerals - you may suffer from malnutrition.

Causes of malnutrition include:

  • Lack of specific nutrients in your diet. Even the lack of one vitamin can lead to malnutrition.
  • An unbalanced diet
  • Certain medical problems, such as malabsorption syndromes and cancers

Symptoms may include fatigue, dizziness, and weight loss. Or, you may have no symptoms. To diagnose the cause of the problem, your doctor may do blood tests and a nutritional assessment. Treatment may include replacing the missing nutrients and treating the underlying cause.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.