Skip to main content
ICD-10/Y21.9XXD

Y21.9XXD ICD-10-CM Code: Unspecified drowning and submersion, undetermined intent, subsequent encounter

Y21.9XXD is the authoritative medical code for Unspecified drowning and submersion, undetermined intent, subsequent encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for unspecified drowning and submersion, undetermined intent, subsequent encounter (ICD-10-CM Y21.9XXD), ensuring healthcare documentation aligns with current federal coding standards.

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Unspecified drowning and submersion, undetermined intent, subsequent encounter is a billable ICD-10-CM diagnosis code (Y21.9D). 7th character: The appropriate 7th character is to be added to each code from category Y21.

Frequently Asked Questions (FAQ) & Clinical Guidance

Does Y21.9XXD require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category Y21.

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Y21.9XXD in its code family, with their registry titles.

  • Y21.4XXA — Drowning and submersion in natural water, undetermined intent, initial encounter
  • Y21.4XXD — Drowning and submersion in natural water, undetermined intent, subsequent encounter
  • Y21.4XXS — Drowning and submersion in natural water, undetermined intent, sequela
  • Y21.8 — Other drowning and submersion, undetermined intent
  • Y21.8XXA — Other drowning and submersion, undetermined intent, initial encounter
  • Y21.8XXD — Other drowning and submersion, undetermined intent, subsequent encounter
  • Y21.8XXS — Other drowning and submersion, undetermined intent, sequela
  • Y21.9 — Unspecified drowning and submersion, undetermined intent
  • Y21.9XXA — Unspecified drowning and submersion, undetermined intent, initial encounter
  • Y21.9XXS — Unspecified drowning and submersion, undetermined intent, sequela

View all codes in the Y21 family