What does ICD-10-CM code K56.609 mean?
K56.609 represents Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction. This gastrointestinal condition is classified under Chapter 11 (Diseases of the Digestive System) for documentation and billing purposes. Coders frequently reference this code as icd 10 small bowel obstruction.
Code category and hierarchy
- Chapter: 11 – Diseases of the Digestive System (K00-K95)
- Category: K56
- Code: K56.609 – Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction
Guideline notes and coding considerations
Specificity Warning
K56.609 is an unspecified code. Query the provider for greater specificity when documentation suggests a more precise code is available. Using unspecified codes when specific codes exist may trigger audits.
- Excludes1: congenital stricture or stenosis of intestine ( Q41 - Q42 ); cystic fibrosis with meconium ileus ( E84.11 ); ischemic stricture of intestine ( K55.1 ); meconium ileus NOS ( P76.0 )
Learn the underlying rules in the ICD-10 Coding Guidelines, Specificity Requirements, Risk Adjustment & MEAT Documentation.
Documentation tips (what coders should confirm)
- Verify the clinical documentation supports the use of K56.609
- Query the provider for greater specificity if clinical details suggest a more precise code
- This is a risk-adjusted diagnosis — ensure annual documentation with MEAT criteria (Monitor, Evaluate, Assess/Address, Treat)
When NOT to use K56.609
Do not assign K56.609 when the clinical scenario involves: congenital stricture or stenosis of intestine ( Q41 - Q42 ); cystic fibrosis with meconium ileus ( E84.11 ); ischemic stricture of intestine ( K55.1 ); when documentation provides enough detail for a more specific code. Review excludes notes and assign the most specific code supported by documentation.
Audit risk
K56.609 is an unspecified code. Payers and auditors may flag claims with unspecified codes when the medical record contains sufficient detail for a more precise diagnosis. Query the provider for specificity before submitting.
Validate K56.609 Against ICD 10 CM Coding Guidelines
Check this code against official guidelines for conflicts and compliance issues.
Risk adjustment and HCC mapping
HCC Impact
K56.609 (Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction) maps to the following HCC categories: CMS-HCC V24: HCC 33, CMS-HCC V28: HCC 78, ESRD V24: HCC 33. Proper documentation using MEAT criteria (Monitor, Evaluate, Assess/Address, Treat) is required for each encounter to support risk-adjusted diagnoses.
Learn more about risk adjustment documentation in our Risk Adjustment & MEAT Documentation Guide.
Related ICD-10 codes
Frequently Asked Questions
The ICD-10-CM code for icd 10 small bowel obstruction is K56.609, which represents unspecified intestinal obstruction, unspecified as to partial versus complete obstruction. Verify this code using the ICD Code Auditor to ensure guideline compliance.
Yes. K56.609 is an active ICD-10-CM diagnosis code used to classify unspecified intestinal obstruction, unspecified as to partial versus complete obstruction for clinical documentation, reporting, and medical billing purposes.
Use the ICD Code Auditor to check K56.609 against official ICD-10-CM coding guidelines. The tool validates by fiscal year and patient gender to identify potential conflicts.
K56.609 should be used only when clinical documentation does not provide enough detail for a more specific code. Always query the provider when documentation suggests greater specificity is available, as unspecified codes may trigger audits and impact risk adjustment.
Yes. K56.609 maps to HCC 33 in the CMS-HCC V24 model, and HCC 78 in V28. Accurate coding of this condition directly impacts RAF scores for Medicare Advantage plans. Ensure documentation demonstrates the condition was evaluated and managed during the encounter.
Documentation should clearly describe the clinical condition represented by K56.609 (Unspecified intestinal obstruction, unspecified as to partial versus complete obstruction). Include relevant clinical findings, diagnostic test results, provider assessment, and the treatment plan. The diagnosis must be supported by the medical record and not based solely on lab results without clinical interpretation.
Sources
Reviewed by: Certified ICD-10 Coding & Risk Adjustment Specialist
Learn more about our Clinical Coding Review Process