R09.01 vs T71.9XXD
R09.01 (Asphyxia) compared with T71.9XXD (Asphyxiation due to unspecified cause, subsequent encounter), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. R09.01 carries an Excludes1 note covering T71.9XXD: “traumatic asphyxia (T71.-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. T71.9XXD carries an Excludes1 note covering R09.01: “asphyxia NOS (R09.01)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| R09.01Asphyxia | T71.9XXDAsphyxiation due to unspecified cause, subsequent encounter | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) | S00-T88 — Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88) |
| Definition | Asphyxia is a billable ICD-10-CM diagnosis code (R09.01). | Asphyxiation due to unspecified cause, subsequent encounter is a billable ICD-10-CM diagnosis code (T71.9D). |
| 7th character | — | The appropriate 7th character is to be added to each code from category T71 |
| Includes | — | Suffocation (by strangulation) due to unspecified cause Suffocation NOS Systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified cause Systemic oxygen deficiency due to mechanical threat to breathing due to unspecified cause |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources