Wiki intra-abdominal abscess

Yes, in the ICD-9 index under 'Abscess, intra-abdominal' it indicates 567.22
The tabular section supporst this with 'Peritoneal abscess' (peritoneal = pertainting to the peritoneum. Peritoneum = the serous membrane lining the abdominal cavity)
 
For multiple intra abdominal abscess I have 3 icd 9 codes I'm confused on.
682.2
567.22
682.9
Can anyone please help and also explain enter the code is correct versus the others.Thanks
 
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