T79.0XXA

Air embolism (traumatic), initial encounter

Risk-adjusting (HCC)Billable code

HCC risk adjustment mapping

CMS-HCC V28

HCC267

Deep Vein Thrombosis and Pulmonary Embolism

CMS-HCC ESRD V24

HCC173

Traumatic Amputations and Complications

Coding notes

Excludes 1 never coded together · Excludes 2 may co-exist

Inherited from T79.0Air embolism (traumatic)
Excludes 1

air embolism complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2) air embolism complicating pregnancy, childbirth and the puerperium (O88.0) air embolism following infusion, transfusion, and therapeutic injection (T80.0) air embolism following procedure NEC (T81.7-)

Inherited from T79Certain early complications of trauma, NEC
Excludes 2

acute respiratory distress syndrome (J80) complications occurring during or following medical procedures (T80-T88) complications of surgical and medical care NEC (T80-T88) newborn respiratory distress syndrome (P22.0)

7th character

The appropriate 7th character is to be added to each code from category T79

Valid 7th characters and their meanings
CharacterMeaning
Ainitial encounter
Dsubsequent encounter
Ssequela
Inherited from chapter 19Injury, poisoning and certain other consequences of external causes
Excludes 2

birth trauma (P10-P15) obstetric trauma (O70-O71)

Use additional

code to identify any retained foreign body, if applicable (Z18.-)

Note

Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes. (T07-T88) Injury, poisoning and certain other consequences of external causes (T07-T88) (T20-T32) Burns and corrosions (T20-T32) Includes: burns (thermal) from electrical heating appliances burns (thermal) from electricity burns (thermal) from flame burns (thermal) from friction burns (thermal) from hot air and hot gases burns (thermal) from hot objects burns (thermal) from lightning burns (thermal) from radiation chemical burn [corrosion] (external) (internal) scalds Excludes2: erythema [dermatitis] ab igne (L59.0) radiation-related disorders of the skin and subcutaneous tissue (L55-L59) sunburn (L55.-)

Official Guidelines for T79.0XXA

FY 2026 ›

Sections that reference T79.0XXA

Sections whose FY 2026 text names T79.0XXA, its T79 category, or a range containing it — the chapter guidance above is the authoritative source.