Free Medical Coding > ICD10 CM > 2024 ICD-10-CM Codes > 2024 ICD-10-CM Codes S00-T88 – Injury, poisoning and certain other consequences of external causes (S00-T88) > 2024 ICD-10-CM Codes T66-T78 – Other and unspecified effects of external causes (T66-T78) > 2024 ICD-10-CM Codes T71 – Asphyxiation (T71) > 2024 ICD-10-CM Codes T71.2 – Asphyxiation due to systemic oxygen deficiency due to low oxygen content in ambient air (T71.2) > 2024 ICD-10-CM Codes T71.21 – Asphyxiation due to cave-in or falling earth (T71.21)