ICD-10 Code E87.3 – Alkalosis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E87.3 – Alkalosis
What it is
Alkalosis is a condition in which the body’s acid-base balance shifts toward excess alkalinity. It may reflect a respiratory or metabolic process, so you should code it only when documentation supports the diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Commonly reported findings may include symptoms of acid-base disturbance such as neuromuscular irritability, lightheadedness, or changes in breathing pattern, depending on the underlying cause.
When to use this code
Use E87.3 when the provider documents alkalosis as a diagnosis, including when it is identified during evaluation of an acid-base disorder. It may also be appropriate when the record clearly states respiratory or metabolic alkalosis. If the note only describes an abnormal blood gas without a diagnosis, check documentation.
Do not use for
Do not use this code for acidosis, mixed acid-base disorders without a clear diagnosis, or isolated abnormal test results that are not documented as alkalosis. Avoid assuming the type if the record is unclear.
Coding tip
Query the provider when the chart shows acid-base imbalance but does not specify alkalosis.