K57 — Diverticular disease of intestine
K57 is a non-billable header ICD-10-CM code for diverticular disease of intestine. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
Excludes2 — not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- diverticulum of appendix (K38.2)
Code also
Both codes may be needed to describe the encounter fully. Sequencing depends on the reason for the visit.
- if applicable peritonitis K65.-
Other codes that can never be billed with K57
These codes carry an Excludes1 note pointing at K57. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading K57 alone.
- K57.0Diverticulitis of small intestine with perforation and abscess
- K57.1Diverticular disease of small intestine without perforation or abscess
- K57.2Diverticulitis of large intestine with perforation and abscess
- K57.3Diverticular disease of large intestine without perforation or abscess
- K63.0Abscess of intestine
- K63.1Perforation of intestine (nontraumatic)
- K92.2Gastrointestinal hemorrhage, unspecified
Risk adjustment
K57 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead K57
8 child codes. Green means billable.
- K57.0Diverticulitis of small intestine with perforation and abscess
- K57.1Diverticular disease of small intestine without perforation or abscess
- K57.2Diverticulitis of large intestine with perforation and abscess
- K57.3Diverticular disease of large intestine without perforation or abscess
- K57.4Diverticulitis of both small and large intestine with perforation and abscess
- K57.5Diverticular disease of both small and large intestine without perforation or abscess
- K57.8Diverticulitis of intestine, part unspecified, with perforation and abscess
- K57.9Diverticular disease of intestine, part unspecified, without perforation or abscess
Questions about K57
- Is K57 a billable ICD-10-CM code?
- No. K57 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does K57 sit in the tabular list?
- Diseases of the digestive system (K00-K95), in the block Other diseases of intestines (K55-K64).
- What cannot be coded together with K57?
- K57 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.