Oth disturbances of temperature regulation of newborn

This code represents various atypical or unusual issues with a newborn's ability to maintain a stable body temperature that are not specifically classified elsewhere. It covers conditions like persistent hypothermia or hyperthermia in a neonate when more specific codes for environmental exposure, infection, or metabolic disorders are not applicable.

Use this code when documentation indicates a newborn is experiencing a temperature regulation disturbance that is not clearly defined as hypothermia (P80.-), hyperthermia (P81.0), or due to an external cause (e.g., P80.8). This code is appropriate for conditions such as neonatal poikilothermia or other specified thermoregulatory dysfunction not attributable to a primary underlying disease.

• Always seek more specific codes first; this is a residual category.
• Ensure documentation clearly states the type of temperature disturbance if not hypothermia or hyperthermia, and rules out other causes.
• Consider sequencing this code after any underlying conditions contributing to the temperature dysregulation, if applicable and known.