Normal anion gap acidosis

Normal anion gap acidosis
Classification and external resources
Specialty	endocrinology
ICD-10	E87.2
ICD-9-CM	276.2
DiseasesDB	29144
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In renal physiology, normal anion gap acidosis, and less precisely non-anion gap acidosis, is an acidosis that is not accompanied by an abnormally increased anion gap.

The most common cause of normal anion gap acidosis is diarrhea with a renal tubular acidosis being a distant second.

The differential diagnosis of normal anion gap acidosis is relatively short (when compared to the differential diagnosis of acidosis):

As opposed to high anion gap acidosis (which involves increased organic acid production), normal anion gap acidosis involves either increased production of chloride (hyperchloremic acidosis) or increased excretion of bicarbonate.

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