What has to be incarcerated to use a incarcerated hernia CPT code? Does it matter if the fat, omentum or intestine is incarcerated in the hernia to code it as incarcerated? Sometimes the pre and post op dx says, i.e., umbilical hernia, but in the body of the op the physicians talks about omentum being incarcerated.....I never know what has to be incarcerated to count as incarcerated hernia? Any help to clarify this question would be greatly appreciated. Thanks!