Table 2. ICD-9/10 codes used to define MAAGE encounters.
| Diagnosis | ICD-9 | ICD-10 |
|---|---|---|
| Cause unspecified | ||
| Presumed infectious | 009.0–009.3 | A09 |
| Presumed noninfectious | 558.9 | K52.9 |
| Symptom: Diarrhea NOS | 787.91 | |
| Cause specified | ||
| Viral | 008.61–008.8 | A08.0-A08.5 |
| Rotavirus | 008.61 | A08.0 |
| Adenovirus | 008.62 | A08.2 |
| Norwalk | 008.63 | A08.1 |
| Other viral enteritis | 008.64–008.69 | A08.3, A08.5 |
| Other not elsewhere classified | 008.8 | A08.4 |
| Bacterial | 001.0–005.9, 008.0–008.5 | A00.0-A05.9 |
| Cholera | 001.0–00.9 | A00.0-A00.9 |
| Typhoid/Paratyphoid | 002.0–002.9 | A01.0-A01.4 |
| Salmonella | 003.0–003.9 | A02.0-A02.9 |
| Shigella | 004.0–004.9 | A03.0-A03.9 |
| Other bacterial food poisoning | 005.0–005.9 | A05.0-A05.9 |
| E. coli | 008.0 | A04.0-A04.4 |
| Other/unspecified bacteria | 008.1–008.5 | A04.5-A04.9 |
| Parasitic | 006.0–006.2, 006.9–007.9 | A06.0-A07.9 |
| Ameba | 006.0–006.2, 006.9 | A06.0-A06.2 |
| Other protozoal | 007.0–007.9 | A07.0-A07.9 |