At what point does it change from T14.91 to Z91.5? Example, Pt comes in on 8/1 for SA by OD and is there until 8/10. Does each day get T14.91 or does it change to Z91.5? And if it changes, at what point does it change? Please explain.
A code for "history of" is used when the circumstance/situation/condition influences the person's health status, but is not a current injury or illness. The attempt is relevant throughout the patient's stay as that is the reason for the admit and ongoing treatment. At some point, (I assume) the provider will probably diagnose the patient with a mental or behavioral disorder to explain the reasoning for the attempt. The transition from active to history of is really dependent on the provider's documentation.
Out of curiosity, if the patient had a SA by OD, are you also coding from the table of drugs and chemicals for poisoning/self-harm?
Since he is currently under active treatment for that condition he would be given SA code and its history is coded only after that condition is completely cured and after a while returns to hospital with another condition that may have a relation with previous suicide attempt. this is what I understood from so far.