T71.20XD ICD-10-CM Code: Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified cause, subsequent encounter
T71.20XD is the authoritative medical code for Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified cause, subsequent encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified cause, subsequent encounter (ICD-10-CM T71.20XD), ensuring healthcare documentation aligns with current federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Inpatient Payment Groups (MS-DRG)
MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.
- MS-DRG 949 — AFTERCARE WITH CC/MCC (MDC 23)
- MS-DRG 950 — AFTERCARE WITHOUT CC/MCC (MDC 23)
A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.
Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.
Official Registry Overview & Definition
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for T71.20XD in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- acute respiratory distress (syndrome) (J80)
- anoxia due to high altitude (T70.2)
- asphyxia NOS (R09.01)
- asphyxia from carbon monoxide (T58.-)
- asphyxia from inhalation of food or foreign body (T17.-)
- asphyxia from other gases, fumes and vapors (T59.-)
- respiratory distress (syndrome) in newborn (P22.-)
Code Also
Additional codes that may be required to fully describe the encounter.
- Code also, if applicable, place of occurrence, such as:
- highway rest stop (Y92.523)
- school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
- service areas as the place of occurrence of the external cause (Y92.52-)
- single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
- transport vehicle as the place of occurrence of the external cause (Y92.81-)
Frequently Asked Questions (FAQ) & Clinical Guidance
Does T71.20XD require a 7th character?
Yes. The appropriate 7th character is to be added to each code from category T71.
What can't be coded together with T71.20XD?
Per official ICD-10-CM Excludes1 instructions, T71.20XD must not be reported together with: acute respiratory distress (syndrome) (J80); anoxia due to high altitude (T70.2); asphyxia NOS (R09.01); asphyxia from carbon monoxide (T58.-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to T71.20XD in its code family, with their registry titles.
- T71.194D — Asphyxiation due to mechanical threat to breathing due to other causes, undetermined, subsequent encounter
- T71.194S — Asphyxiation due to mechanical threat to breathing due to other causes, undetermined, sequela
- T71.2 — Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air
- T71.20 — Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified cause
- T71.20XA — Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified cause, initial encounter
- T71.20XS — Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air due to unspecified cause, sequela
- T71.21 — Asphyxiation due to cave-in or falling earth
- T71.21XA — Asphyxiation due to cave-in or falling earth, initial encounter
- T71.21XD — Asphyxiation due to cave-in or falling earth, subsequent encounter
- T71.21XS — Asphyxiation due to cave-in or falling earth, sequela