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P22.0 vs T79.A0

P22.0 (Respiratory distress syndrome of newborn) compared with T79.A0 (Compartment syndrome, unspecified), from the official CMS tabular data.

Current data releases:ICD-10-CM FY2027 · ICD-10-PCS FY2027 · HCPCS October 2026 · MS-DRG v44 · Medicare Code Editor v44.0 · NCCI PTP Q4 2026 · MUE Q4 2026 · NCD code lists 2026-01 · LCD export September 28, 2026 · All releases and sources

Summary

These codes can be reported together when both conditions are documented, because T79.A0 lists P22.0 under Excludes2, which marks them as distinct conditions.

Official rule
What is different?

The conditions named, billing status and chapter.P22.0 is “Respiratory distress syndrome of newborn”; T79.A0 is “Compartment syndrome, unspecified”. T79.A0 is a non-billable header; P22.0 is billable. P22.0 sits in P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96); T79.A0 in S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

Registry fact

Can these codes be reported together?

Yes, when both are documented.T79.A0 lists P22.0 under Excludes2: “newborn respiratory distress syndrome (P22.0)”. Excludes2 marks distinct conditions that may both be reported when both are documented.

Official ruleGuide: Excludes1 vs Excludes2

Is there an Excludes1 relationship?

None.Neither entry carries an Excludes1 note that names the other code. T79.A0 carries 2 Excludes1 notes covering other codes; the side-by-side table quotes them.

Official rule

Is there an Excludes2 relationship?

Yes.T79.A0’s tabular entry: “newborn respiratory distress syndrome (P22.0)”. The note covers P22.0.

Official ruleGuide: Excludes1 vs Excludes2

Is one more specific?

Not comparable.The codes sit in different categories; specificity is only comparable within one category.

Is one a parent or header code?

One is a header.T79.A0 is a non-billable header, but P22.0 is not one of its subdivisions.

Registry fact

Are there sequencing instructions?

None.Neither entry carries a Code First or Use Additional Code note that names the other.

Official rule

Are there other coding relationships?

None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.

MedCoder-derived

Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels

Can these codes be reported together?

Informational

Excludes2 relationship

T79.A0
Compartment syndrome, unspecified
↔
P22.0
Respiratory distress syndrome of newborn

What we found

Yes, when both are documented.T79.A0 carries an Excludes2 note covering P22.0: “newborn respiratory distress syndrome (P22.0)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

What to review

Report both only when the documentation supports both conditions; otherwise report the one documented.

Guide: Excludes1 vs Excludes2Check these on a claim

Why it matters

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source / rule

CMS ICD-10-CM tabular instructional notes

Official guidance behind these answers

  • Section I.A.12.b — Excludes2 · applies to: Excludes2

    A type 2 Excludes note represents “Not included here.” An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

    ICD-10-CM Official Guidelines FY2027

Quoted from the ICD-10-CM Official Guidelines for Coding and Reporting in effect for the release shown. The tabular notes above are the code-level instruction; these sections are the convention that says how such a note is applied. Source document (CMS PDF) · Release and checksum

Side by side

Similar descriptions do not make codes interchangeable. The documentation and the official instructions decide which code applies.

Official descriptionDiffers
P22.0

Respiratory distress syndrome of newborn

T79.A0

Compartment syndrome, unspecified

StatusDiffers
P22.0
Billable
T79.A0
Non-billable header

A header is not reported on a claim; a code beneath it is.

Report instead: T79.A0XA, T79.A0XD, T79.A0XS

Excludes1Differs
P22.0

None at this code

T79.A0
  • fibromyalgia (M79.7)
  • nontraumatic compartment syndrome (M79.A-)
Excludes2Differs
P22.0
  • respiratory arrest of newborn (P28.81)
  • respiratory failure of newborn NOS (P28.5)
T79.A0
  • traumatic ischemic infarction of muscle (T79.6)
  • 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)
CategoryDiffers
P22.0

P22 Respiratory distress of newborn

T79.A0

T79 Certain early complications of trauma, not elsewhere classified

ChapterDiffers
P22.0

P00-P96 — Certain Conditions Originating in the Perinatal Period (P00-P96)

T79.A0

S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88)

IncludesDiffers
P22.0
  • Cardiorespiratory distress syndrome of newborn
  • Hyaline membrane disease
  • Idiopathic respiratory distress syndrome [IRDS or RDS] of newborn
  • Pulmonary hypoperfusion syndrome
T79.A0
  • Compartment syndrome NOS
7th characterDiffers
P22.0

None at this code

T79.A0
  • The appropriate 7th character is to be added to each code from category T79

No Code first, Use additional code and Code also note at either code.

Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on. In a row that differs, notes every code shares are dimmed.

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Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources