Billable / Specific Code
ICD-10-CM Y21.4 is the diagnosis code for Drowning and submersion in natural water, undetermined intent. This code falls under the section "Event of undetermined intent" within Chapter 20 — External causes of morbidity (V00-Y99). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Always refer to the official ICD-10-CM Tabular List for complete coding guidelines. Ensure documentation supports the specificity of the code selected. When in doubt, consult a certified medical coder or the latest CMS guidelines.
Understanding where Y21.4 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, Y21.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
Y21.4 is the ICD-10-CM diagnosis code for "Drowning and submersion in natural water, undetermined intent". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of Y21.4 is Y21 ("Drowning and submersion, undetermined intent"). Y21.4 provides a more specific classification within this category.
Y21.4 is located in Section Y21-Y33 — "Event of undetermined intent" within Chapter 20 of the ICD-10-CM Tabular List.
Use Y21.4 when the patients documented diagnosis matches "Drowning and submersion in natural water, undetermined intent" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Drowning and submersion in natural water, undetermined intent is Y21.4.
Yes, Y21.4 can be used as a primary diagnosis code since it is billable and specific.
Y21.4 is in Chapter 20 of the ICD-10-CM Tabular List.
Yes, Y21.4 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.