I sent in a similar question. The answer key had hypertension, but the surgery was an amputation of the toe; and nowhere did it mention the HTN except in the INDICATIONS for surgery. "A pleasant female with history of diabetes and hypertension presents..." I coded the diabetes with gangrene, but since the HTN was not mentioned in the surgical note, I did not code it.
The reply was that if the diagnosis is included in the INDICATIONS FOR SURGERY, it is coded. Unfortunately this is just as random as all aspects of Practicode. After that I did code all diagnoses in INDICATIONS, but usually they weren't coded in the answer key. And now when those cases were "migrated" to the new platform, those "extra" codes all count against my accuracy score.
I agree with you on the case of the child with CP. But unfortunately there's no way of knowing when Practicode will or will not follow their own advice.
The more I do in Practicode, the more confused I become.