Is S27.0XXS a billable ICD-10-CM code?

Yes. S27.0XXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S27.0XXS sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).

What cannot be coded together with S27.0XXS?

S27.0XXS carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S27.0XXS (S27.0) and apply to it just the same.

S27.0XXS

S27.0XXS — Traumatic pneumothorax, sequela

Billable / specific codeICD-10-CMPOA exempt

S27.0XXS is a billable, specific ICD-10-CM code for traumatic pneumothorax, sequela. It is valid for submission on a claim.

7th character "S" — sequela

The appropriate 7th character is to be added to each code from category S27

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.

spontaneous pneumothorax (J93.-)

Excludes1 inherited from the categories above S27.0XXS

These are not written on S27.0XXS, but they bind it: a note on a category applies to every code beneath it. Billing S27.0XXS with anything listed here is a denial.

Written on S27.0 — Traumatic pneumothorax

spontaneous pneumothorax (J93.-)

Excludes2 inherited from the categories above S27.0XXS

Also inherited, and the opposite of Excludes1: these conditions are not part of S27.0XXS, but a patient can have both, so you may code both.

Written on S27 — Injury of other and unspecified intrathoracic organs

injury of cervical esophagus (S10-S19)
injury of trachea (cervical) (S10-S19)

Risk adjustment

S27.0XXS does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

S27.0XXS is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A56580Billing and Coding: Computerized Axial Tomography (CT), Thorax
A56717Billing and Coding: Respiratory Therapy (Respiratory Care)
A57224Billing and Coding: Respiratory Care
A57326Billing and Coding: Electrocardiograms

Code history

S27.0XXS has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.

Related codes at this level

Codes that share S27.0. If S27.0XXS is not quite right, the correct code is usually one of these.

Questions about S27.0XXS

Is S27.0XXS a billable ICD-10-CM code?: Yes. S27.0XXS is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S27.0XXS sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).
What cannot be coded together with S27.0XXS?: S27.0XXS carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S27.0XXS (S27.0) and apply to it just the same.