Other effects of heat and light

• birth trauma (P10-P15)
• obstetric trauma (O70-O71)

code to identify any retained foreign body, if applicable (Z18.-)

• Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
• The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

• , 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-)

• erythema [dermatitis] ab igne (L59.0)
• malignant hyperpyrexia due to anesthesia (T88.3)
• radiation-related disorders of the skin and subcutaneous tissue (L55-L59)

• burns (T20-T31)
• sunburn (L55.-)
• sweat disorder due to heat (L74-L75)

The appropriate 7th character is to be added to each code from category T67