ICD-10-CM
ICD-10 code for Acidosis: E87.20
The ICD-10-CM index points "Acidosis" to E87.2 (Acidosis), a header that is not billable. When nothing more specific is documented, the billable code is E87.20, Acidosis, unspecified.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
- E10.10in Type 1 diabetes, Type 1 diabetes mellitus with ketoacidosis without comaBillable
- N25.89kidney, tubular, Other disorders resulting from impaired renal tubular functionBillable
- E87.20lactic, Acidosis, unspecifiedBillable
- E87.20metabolic NEC, Acidosis, unspecifiedBillable
- P84mixed metabolic and respiratory, newborn, Other problems with newbornBillable
- P84newborn, Other problems with newbornBillable
- N25.89renal (hyperchloremic) (tubular), Other disorders resulting from impaired renal tubular functionBillable
- E87.29respiratory, Other acidosisBillable
- E87.29specified NEC, Other acidosisBillable
More specific codes in E87
A header groups codes and is not billed. A billable code is one you can report.
- E87Other disorders of fluid, electrolyte and acid-base balanceHeader
- E87.0Hyperosmolality and hypernatremiaBillable
- E87.1Hypo-osmolality and hyponatremiaBillable
- E87.2AcidosisHeader
- E87.20Acidosis, unspecifiedBillable
- E87.21Acute metabolic acidosisBillable
- E87.22Chronic metabolic acidosisBillable
- E87.29Other acidosisBillable
- E87.3AlkalosisBillable
- E87.4Mixed disorder of acid-base balanceBillable
- E87.5HyperkalemiaBillable
- E87.6HypokalemiaBillable
- E87.7Fluid overloadHeader
- E87.70Fluid overload, unspecifiedBillable
- E87.71Transfusion associated circulatory overloadBillable
- E87.79Other fluid overloadBillable
- E87.8Other disorders of electrolyte and fluid balance, not elsewhere classifiedBillable
Code also
The CDC tabular list says a second code may be needed with this one. The note does not set which is listed first.
Code also, if applicable, respiratory failure with hypercapnia (J96. with 5th character 2)
Excludes1
Related conditions
Related pages
- E87.20 code detailsNotes, nearby codes, CMS-HCC group
- Category E87.2Every code under it
- Chapter 4Endocrine, nutritional and metabolic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Acidosis?
The ICD-10-CM index points "Acidosis" to E87.2 (Acidosis), a header that is not billable. When nothing more specific is documented, the billable code is E87.20, Acidosis, unspecified.
Is E87.20 billable?
Yes. E87.20 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to E87.20?
The CDC tabular list gives 6 Excludes1 notes (not coded together) for E87.20 and the categories above it. They are listed on this page.
What chapter is E87.20 in?
Chapter 4. Endocrine, nutritional and metabolic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.