ICD-10-CM > S00-T88 > T66-T78 > T68 T68 Hypothermia Non-Billable/Non-Specific Applicable To Accidental hypothermiaHypothermia NOS Use Additional code to identify source of exposure:Exposure to excessive cold of man-made origin (W93)Exposure to excessive cold of natural origin (X31) Type 1 Excludes hypothermia following anesthesia (T88.51)hypothermia not associated with low environmental temperature (R68.0)hypothermia of newborn (P80.-) Type 2 Excludes frostbite (T33-T34) Codes T68XXXA..., initial encounterT68XXXD..., subsequent encounterT68XXXS..., sequela