Answer :
a. R10.9. Food poisoning and bacterial or viral gastroenteritis can cause similar symptoms to those experienced by the patient in question.
Food poisoning can be a secondary diagnosis with symptoms like nausea, vomiting, and abdominal pain.
Bacterial or viral gastroenteritis should be considered, especially if there is suspicion of undercooked food consumption.
Abdominal pain (R10.9), nausea (R11.0), and vomiting (R11.10) are relevant secondary diagnoses to consider.
The appropriate secondary diagnoses for the patient's symptoms are a) R10.9, c) R11.0, d) R11.10, and e) R11.2, covering unspecified abdominal pain, nausea, vomiting, and nausea with vomiting. Option b) none is not appropriate since there are multiple relevant diagnoses codes.
Based on the symptoms described and considering the given ICD-10 codes:
- R10.9 - Unspecified abdominal pain: This fits as the patient has complaints of abdominal pain without a specific diagnosis from the exam.
- R11.0 - Nausea: This fits as the patient is experiencing nausea.
- R11.10 - Vomiting, unspecified: This also fits as the patient is experiencing vomiting.
- R11.2 - Nausea with vomiting, unspecified: Since the patient has both nausea and vomiting, this code is also appropriate.
Thus, the correct secondary diagnoses are a) R10.9, c) R11.0, d) R11.10, and e) R11.2.