Question 1

Is Y21 a billable ICD-10 code?

Accepted Answer

No, Y21 is not a billable code. It is a category code that requires additional specificity. You must select a more specific code from the subcategories for billing purposes.

Question 2

What does ICD-10 code Y21 mean?

Accepted Answer

ICD-10-CM code Y21 represents Drowning and submersion, undetermined intent. This code is part of the International Classification of Diseases, 10th Revision, Clinical Modification used for medical coding and billing in the United States.

Question 3

When was ICD-10 code Y21 introduced?

Accepted Answer

Code Y21 has been part of ICD-10-CM since 2016, when the coding system was mandated for use in the United States. This code was included in the original US implementation.

Question 4

What is the parent category for ICD-10 code Y21?

Accepted Answer

The parent category for Y21 is section:Y21-Y33 (Event of undetermined intent (Y21-Y33)). This hierarchical classification helps organize related diagnoses for more accurate coding.

Question 5

Does Y21 require a 7th character extension?

Accepted Answer

Yes, Y21 requires a 7th character to specify the encounter type. Available extensions include: A (initial encounter), D (subsequent encounter), S (sequela). Use "X" as a placeholder to fill empty positions before the 7th character (e.g., Y21XXA for initial encounter). The extension indicates whether this is an initial visit, follow-up, or treatment for a late effect.

Y212026

Notes1Additional information

7th Character Extensions3Encounter type specifiers

Is Y21 a billable ICD-10 code?

What does ICD-10 code Y21 mean?

When was ICD-10 code Y21 introduced?

What is the parent category for ICD-10 code Y21?

Does Y21 require a 7th character extension?