Non-Billable / Non-Specific Code
ICD-10-CM K91 is the diagnosis code for Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified. This code falls under the section "Other diseases of the digestive system" within Chapter 11 â Diseases of the digestive system (K00-K95). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions are not included in K91. If the patient has both, code each condition separately:
Understanding where K91 sits in the ICD-10-CM classification helps ensure proper coding:
No, K91 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
K91 is the ICD-10-CM diagnosis code for "Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
K91 is located in Section K90-K95 â "Other diseases of the digestive system" within Chapter 11 of the ICD-10-CM Tabular List.
K91 has 8 sub-code(s) that provide more specific detail: K91.0, K91.1, K91.2, K91.3, K91.5 and more.
Use K91 when the patients documented diagnosis matches "Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Intraoperative and postprocedural complications and disorders of digestive system, not elsewhere classified is K91.
No, K91 is non-billable. Use a more specific sub-code for primary diagnosis billing.
K91 is in Chapter 11 of the ICD-10-CM Tabular List.
Yes, K91 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.