What is this code?
ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Endocrine, nutritional and metabolic diseases (E00-E89).
When is it used?
- May be used when a clinician documents acidosis in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
- This entry may represent a broader category rather than the most specific billable code.
Code hierarchy
chapter
4Endocrine, nutritional and metabolic diseases (E00-E89)
block
E70-E88Metabolic disorders
category
E87Other disorders of fluid, electrolyte and acid-base balance
currentE87
Official coding notes
Excludes1 (do not code together)
- diabetic acidosis - see categories E08-E10, E11, E13 with ketoacidosis
Where you may see this code
You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.
Related specialists
EndocrinologistGeneral Physician
Related codes
Sibling codes
E87.0Hyperosmolality and hypernatremiabillableE87.1Hypo-osmolality and hyponatremiabillableE87.3AlkalosisbillableE87.4Mixed disorder of acid-base balancebillableE87.5HyperkalemiabillableE87.6HypokalemiabillableE87.7Fluid overloadE87.8Other disorders of electrolyte and fluid balance, not elsewhere classifiedbillable
Mapped diagnoses and classifications
SNOMED_CT 70731005high
Acidemia
Source: SNOMED International ICD-10 map
SNOMED_CT 51387008high
Acidosis
Source: SNOMED International ICD-10 map
SNOMED_CT 955240261000119106high
Acute metabolic acidosis
Source: SNOMED International ICD-10 map
SNOMED_CT 803883871000119104high
Acute metabolic acidosis with increased anion gap
Source: SNOMED International ICD-10 map
SNOMED_CT 70644008high
Acute respiratory acidosis
Source: SNOMED International ICD-10 map
SNOMED_CT 687808741000119101high
Chronic metabolic acidosis
Source: SNOMED International ICD-10 map
Coding guidelines
Compatibility
Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.
Legacy codes
E87.2
Replacement codes
E87.20 — Acidosis, unspecifiedE87.21 — Acute metabolic acidosisE87.22 — Chronic metabolic acidosisE87.29 — Other acidosis
Common synonyms
Acidosis
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.