R64

✓ Billable

Cachexia

Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

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❌ Excludes1

direct

These codes are mutually exclusive. Never code them together.

• abnormal weight loss (R63.4)
• cachexia due to underlying condition (E88.A)
• nutritional marasmus (E41)

Clinical Description

ICD-10-CM code R64 represents cachexia. This code falls under the Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

Frequently Asked Questions

What is ICD-10 code R64?

ICD-10-CM code R64 is "Cachexia". It belongs to the category: Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99).

Is R64 a billable ICD-10 code?

Yes, R64 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

What codes are excluded with R64?

R64 has 3 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

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Code Information

CodeR64

BillableYes

CategorySymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)

Excludes13 rule(s)

Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)