ICD-10 E87.20
Billable / Specific CCAcidosis, unspecified
About ICD-10-CM E87.20
ICD-10-CM code E87.20 represents Acidosis, unspecified. This is a billable/specific code in the Endocrine, Nutritional, and Metabolic chapter (block E87). The 2026 edition of ICD-10-CM E87.20 became effective on October 1, 2025.
Coding Tips for E87.20
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
E87.20 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under E87.20. Per CMS ICD-10-CM Tabular 2026.
- Lactic acidosis NOS
- Metabolic acidosis NOS
Coding Notes
Code Also
- , if applicable, respiratory failure with hypercapnia (J96. with 5th character 2)
Inpatient DRG Impact, CC
codes Acidosis, unspecified. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for E87.20
Local Coverage Determinations (LCDs) from CMS MACs that list E87.20 as a covered diagnosis.
Showing top 10 of 194 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing E87.20.
5 Medicare
1 Aetna
CPT Codes Commonly Billed with E87.20
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- G0480 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 80306 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0482 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 0603U CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 80305 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0659 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0483 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 80307 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- G0481 CMS LCD: Billing and Coding: Urine Drug Testing CMS LCD
- 90999 CMS LCD: Billing and Coding: Frequency of Hemodialysis CMS LCD
Codes Adjacent To E87.20
Other codes in section E70-E88 (Metabolic disorders).
ICD-10 E87.20, Billing FAQ
Is ICD-10 code E87.20 billable? +
Yes, E87.20 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to E87.20? +
ICD-10 E87.20 includes: Lactic acidosis NOS; Metabolic acidosis NOS.
Is E87.20 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with E87.20? +
Procedures frequently paired with E87.20 include: G0480, 80306, G0482, 0603U, 80305.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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