Guidelines › Activity codes (Y93)
Activity codes (Y93)
Official text from the FY2027 ICD-10-CM Official Guidelines for Coding and Reporting. The wording is quoted exactly.
Guidelines I.C.20.c
“An activity code is used only once, at the initial encounter for treatment. Only one code from Y93 should be recorded on a medical record.”
“The activity codes are not applicable to poisonings, adverse effects, misadventures or sequela.”
“Do not assign Y93.9, Unspecified activity, if the activity is not stated.”
Where this applies
The Guidelines are the authority for assigning codes, and following them is required under HIPAA. This page quotes them for convenience and is not a substitute for the official document. See the Terms and Disclaimer.