Non-Billable / Non-Specific Code
ICD-10-CM Y21 is the diagnosis code for Drowning and submersion, undetermined intent. This code falls under the section "Event of undetermined intent" within Chapter 20 — External causes of morbidity (V00-Y99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. 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 sits in the ICD-10-CM classification helps ensure proper coding:
No, Y21 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
Y21 is the ICD-10-CM diagnosis code for "Drowning and submersion, undetermined intent". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
Y21 is located in Section Y21-Y33 — "Event of undetermined intent" within Chapter 20 of the ICD-10-CM Tabular List.
Y21 has 7 sub-code(s) that provide more specific detail: Y21.0, Y21.1, Y21.2, Y21.3, Y21.4 and more.
Use Y21 when the patients documented diagnosis matches "Drowning and submersion, 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, undetermined intent is Y21.
No, Y21 is non-billable. Use a more specific sub-code for primary diagnosis billing.
Y21 is in Chapter 20 of the ICD-10-CM Tabular List.
Yes, Y21 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.