O21.8: Other vomiting complicating pregnancy

Clinical notes

Also known as

Alternate wording, synonyms, or specific conditions that fall under this code, listed to help confirm you've picked the right one.

Vomiting due to diseases classified elsewhere, complicating pregnancy

Use additional code

This code represents an underlying condition. When a related manifestation is also present, coding convention calls for an additional code to be listed after this one.

code, to identify cause.

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•If the associated manifestation or related condition noted above is also documented, an additional code should be reported alongside this one.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

Related codes in this category

O21.0Mild hyperemesis gravidarum
O21.1Hyperemesis gravidarum with metabolic disturbance
O21.2Late vomiting of pregnancy
O21.9Vomiting of pregnancy, unspecified
O21.8Other vomiting complicating pregnancy

ICD-9-CM equivalent

Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents. Verify before use in billing.

64383Approximate match
64380Approximate match
64381Approximate match

View full ICD-10 → ICD-9 crosswalk →

Associated MS-DRGs

O21.8 can serve as the principal diagnosis for these Medicare Severity Diagnosis-Related Groups.

Informational only — actual DRG assignment also depends on procedures, complications/comorbidities (CC/MCC), discharge status, and payer-specific rules not reflected here.