T71.164D Asphyxiation due to hanging, undetermined, subsequent encounter

Billable ICD-10-CM code, FY2026.

Built from T71.164 with 7th character D (subsequent encounter).

Applies from T71 Asphyxiation

Applicable to

• Mechanical suffocation
• Traumatic suffocation

Excludes1 (never code together)

• acute respiratory distress (syndrome) (J80)
• anoxia due to high altitude (T70.2)
• asphyxia NOS (R09.01)
• asphyxia from carbon monoxide (T58.-)
• asphyxia from inhalation of food or foreign body (T17.-)
• asphyxia from other gases, fumes and vapors (T59.-)
• respiratory distress (syndrome) in newborn (P22.-)

7th character note

• The appropriate 7th character is to be added to each code from category T71

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T71.1 Asphyxiation due to mechanical threat to breathing

Applicable to

• Suffocation due to mechanical threat to breathing

Applies from T71.16 Asphyxiation due to hanging

Applicable to

• Hanging by window shade cord

Use additional code

• code for any associated injuries, such as:
• crushing injury of neck (S17.-)
• fracture of cervical vertebrae (S12.0-S12.2-)
• open wound of neck (S11.-)

Code annotations containing back-references to T71.164D

Back-references to T71

• Type 1 Excludes: R09.0 Asphyxia and hypoxemia ("traumatic asphyxia (T71.-)")

Diagnosis Index entries for T71.164D

• Asphyxia, asphyxiation (by) › traumatic › due to › mechanical threat to breathing (accidental) › hanging › circumstances undetermined

Nearby codes

• T71.163A Asphyxiation due to hanging, assault, initial encounter
• T71.163D Asphyxiation due to hanging, assault, subsequent encounter
• T71.163S Asphyxiation due to hanging, assault, sequela
• T71.164 Asphyxiation due to hanging, undetermined
• T71.164A Asphyxiation due to hanging, undetermined, initial encounter
• T71.164D Asphyxiation due to hanging, undetermined, subsequent encounter (this code)
• T71.164S Asphyxiation due to hanging, undetermined, sequela
• T71.19 Asphyxiation due to mechanical threat to breathing due to other causes
• T71.191 Asphyxiation due to mechanical threat to breathing due to other causes, accidental
• T71.191A Asphyxiation due to mechanical threat to breathing due to other causes, accidental, initial encounter
• T71.191D Asphyxiation due to mechanical threat to breathing due to other causes, accidental, subsequent encounter