Y38.6X2D
Terrorism involving biological weapons, civilian injured, subsequent encounter
Y38.6X2D (also written Y386X2D) is a billable ICD-10-CM diagnosis code for terrorism involving biological weapons, civilian injured, subsequent encounter. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 96 codes in category Y38 (Terrorism). Its 7th character, D, means subsequent encounter. Its coding notes include a Use additional code instruction.
7th character
Category Y38 requires a 7th character.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
An external cause code is never a principal or first-listed diagnosis. Its 7th character is assigned for each encounter and should match the injury or condition code.
Suspected terrorism is classified as assault, not Y38. Y38.9 is for conditions occurring after the event, not the initial act.
Use additional code
Add the listed code as a secondary code, if known.
Notes
Also from chapter/block level (1 note)
- This chapter permits the classification of environmental events and circumstances as the cause of injury, and other adverse effects. Where a code from this section is applicable, it is intended that it shall be used secondary to a code from another chapter of the Classification indicating the nature of the condition. Most often, the condition will be classifiable to Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88). Other conditions that may be stated to be due to external causes are classified in Chapters I to XVIII. For these conditions, codes from Chapter 20 should be used to provide additional information as to the cause of the condition.