E86 vs P74.1
E86 (Volume depletion) compared with P74.1 (Dehydration of newborn), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. E86 carries an Excludes1 note covering P74.1: “dehydration of newborn (P74.1)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| E86Volume depletion | P74.1Dehydration of newborn | |
|---|---|---|
| Billing status | Non-billable header | Billable |
| Classification | E00-E89 — Endocrine, Nutritional and Metabolic Diseases (E00-E89) | P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96) |
| Definition | Volume depletion is a non-billable ICD-10-CM category code (E86). | Dehydration of newborn is a billable ICD-10-CM diagnosis code (P74.1). |
| Includes | — | transitory endocrine and metabolic disturbances caused by the infant's response to maternal endocrine and metabolic factors, or its adjustment to extrauterine environment |
| Use additional code | code(s) for any associated disorders of electrolyte and acid-base balance (E87.-) | — |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources