ICD-10 Code E88.A – Wasting disease (syndrome) due to underlying condition (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E88.A – Wasting disease (syndrome) due to underlying condition
What it is
E88.A identifies wasting syndrome caused by an underlying disease or condition. Use it when documentation shows progressive loss of body mass or nutritional reserve linked to another diagnosed illness.
Clinical signs
Clinical features vary; refer to documentation. Commonly, records describe involuntary weight loss, muscle wasting, weakness, and reduced functional status in the setting of chronic disease.
When to use this code
Use this code when the provider documents wasting syndrome as secondary to a known underlying condition, such as a chronic systemic illness. Code the underlying cause first when instructed by the record and applicable coding rules. If the chart only notes general cachexia or malnutrition without this syndrome, check documentation.
Do not use for
Do not use this code for simple weight loss, dehydration, or unspecified malnutrition alone. If the record does not clearly link wasting to an underlying condition, check documentation.
Coding tip
Look for explicit provider wording connecting the wasting syndrome to the causative condition before assigning E88.A.