E87.2

Acidosis

FY2027Chapter 4: Endocrine, nutritional and metabolic diseases/E70–E88 Metabolic disorders

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

E87.2 is a non-billable ICD-10-CM code header for acidosis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are E87.20 Acidosis, unspecified; E87.21 Acute metabolic acidosis; E87.22 Chronic metabolic acidosis and E87.29 Other acidosis. Its coding notes include 12 Excludes1 entries and 1 Excludes2 entry.

Excludes1

Not coded here. The listed conditions generally should not be reported together.

This code
  • diabetic acidosis - see categories E08-E10, E11, E13 with ketoacidosis
Inherited from E87 Other disorders of fluid, electrolyte and acid-base balance
  • diabetes insipidus (E23.2)
  • electrolyte imbalance associated with hyperemesis gravidarum (O21.1)
  • electrolyte imbalance following ectopic or molar pregnancy (O08.5)
  • familial periodic paralysis (G72.3)
  • metabolic acidemia in newborn, unspecified (P19.9)
Also from chapter/block level (6 notes)
Inherited from E70–E88 Metabolic disorders
  • androgen insensitivity syndrome (E34.5-)
  • congenital adrenal hyperplasia (E25.0)
  • hemolytic anemias attributable to enzyme disorders (D55.-)
  • Marfan syndrome (Q87.4-)
  • 5-alpha-reductase deficiency (E29.1)
Inherited from Chapter 4 Endocrine, nutritional and metabolic diseases
  • transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (1 note)
Inherited from E70–E88 Metabolic disorders
  • Ehlers-Danlos syndromes (Q79.6-)

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 4 Endocrine, nutritional and metabolic diseases
  • All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

More specific codes under E87.2 4