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T79.0XXA

T79.0XXA: Air embolism (traumatic), initial encounter

Billable / specific codeICD-10-CM

T79.0XXA is a billable, specific ICD-10-CM code for air embolism (traumatic), initial encounter. It is valid for submission on a claim.

Check T79.0XXA with the rest of the claim: free scrubber

7th character "A": initial encounter

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

A
initial encounter
D
subsequent encounter
S
sequela

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • 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-)

Excludes1 inherited from the categories above T79.0XXA

A category’s note binds every code beneath it.

Written on T79.0: Air embolism (traumatic)

  • 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-)

Excludes2 inherited from the categories above T79.0XXA

Not part of this code, but both may be coded when both are present.

Written on T79: Certain early complications of trauma, not elsewhere classified

  • 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)

Risk adjustment

T79.0XXA risk-adjusts. Under the CMS-HCC V28 model it maps to this category:

  • HCC 267 Deep Vein Thrombosis and Pulmonary Embolism0.294 RAF

Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score. Look up the whole chart to see which of its HCCs the hierarchy would zero.

Medicare coverage

T79.0XXA is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
  • A56612Billing and Coding: CT of the Head
  • A56625Billing and Coding: Echocardiography
  • A56781Billing and Coding: Transthoracic Echocardiography (TTE)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under T79.0

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.