Is K91.89 a billable ICD-10-CM code?

Yes. K91.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does K91.89 sit in the tabular list?

Diseases of the digestive system (K00-K95), in the block Other diseases of the digestive system (K90-K95).

K91.89

K91.89 — Other postprocedural complications and disorders of digestive system

Billable / specific codeICD-10-CM

K91.89 is a billable, specific ICD-10-CM code for other postprocedural complications and disorders of digestive system. It is valid for submission on a claim.

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.

postprocedural retroperitoneal abscess (K68.11)

Use additional code

Add a secondary code to capture the detail described below.

code, if applicable, to further specify disorder

Risk adjustment

K91.89 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.

Medicare coverage

K91.89 is named in 10 Medicare coverage policies — 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A55937Billing and Coding: Diagnostic Colonoscopy
A56389Billing and Coding: Upper Gastrointestinal Endoscopy and Visualization
A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
A56421Billing and Coding: CT of the Abdomen and Pelvis

How K91.89 is indexed

Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to K91.89.

Difficult, difficulty›mechanical, gastroduodenal stoma
Ileus›postoperative
Parotitis, parotiditis›postoperative
Parotitis, parotiditis›surgical
Syndrome›afferent loop NEC
Syndrome›gastrojejunal loop obstruction
Anastomosis›intestinal›complicated NEC
Complication›anastomosis›intestinal NEC(internal)
Diarrhea, diarrheal›functional›following gastrointestinal surgery
Stricture›bile duct›postoperative
Complication›gastrointestinal›postoperative›specified NEC
Complication›postprocedural›specified NEC›digestive

Related codes at this level

Codes that share K91.8. If K91.89 is not quite right, the correct code is usually one of these.

Questions about K91.89

Is K91.89 a billable ICD-10-CM code?: Yes. K91.89 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does K91.89 sit in the tabular list?: Diseases of the digestive system (K00-K95), in the block Other diseases of the digestive system (K90-K95).