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ICD-10 Guide
ICD-10 CodesK51.911

K51.911

Billable

Ulcerative colitis, unspecified with rectal bleeding

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 K51.911 is a billable code used to indicate a diagnosis of ulcerative colitis, unspecified with rectal bleeding.

Key Diagnostic Point:

Ulcerative colitis (UC) is a chronic inflammatory bowel disease characterized by inflammation and ulceration of the colonic mucosa. The condition primarily affects the rectum and can extend proximally to involve varying lengths of the colon. Patients with K51.911 present with symptoms such as abdominal pain, diarrhea, and rectal bleeding, which can vary in severity. The disease progression is often marked by periods of exacerbation and remission, with the potential for complications such as toxic megacolon or colorectal cancer. Diagnostic considerations include a thorough clinical history, physical examination, stool studies, and endoscopic evaluation with biopsy to confirm the diagnosis and assess the extent of the disease. The unspecified nature of this code indicates that the specific location and severity of the ulcerative colitis have not been documented, which may necessitate further investigation to guide treatment and management strategies.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires comprehensive evaluation and differential diagnosis.
  • Treatment complexity: Management may involve medications, dietary changes, and possibly surgery.
  • Documentation requirements: Detailed clinical notes and diagnostic tests are essential.
  • Coding specificity: Unspecified nature may lead to ambiguity in treatment planning.

Audit Risk Factors

  • Common coding errors: Misclassification of the extent of disease.
  • Documentation gaps: Lack of detailed clinical notes regarding the severity and location of ulcerative colitis.
  • Billing challenges: Potential for denials if documentation does not support the unspecified nature of the diagnosis.

Specialty Focus

Medical Specialties

Gastroenterology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Primary Care

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Ulcerative colitis significantly impacts population health, with rising prevalence rates observed globally. The condition can lead to increased healthcare utilization, including frequent hospitalizations and surgeries. Quality measures often focus on the management of symptoms and prevention of complications, which are critical for improving patient outcomes. Understanding the epidemiological aspects of ulcerative colitis, including its association with other gastrointestinal disorders, is essential for healthcare providers to deliver effective care.

ICD-9 vs ICD-10

Ulcerative colitis significantly impacts population health, with rising prevalence rates observed globally. The condition can lead to increased healthcare utilization, including frequent hospitalizations and surgeries. Quality measures often focus on the management of symptoms and prevention of complications, which are critical for improving patient outcomes. Understanding the epidemiological aspects of ulcerative colitis, including its association with other gastrointestinal disorders, is essential for healthcare providers to deliver effective care.

Reimbursement & Billing Impact

impact reimbursement. Regular audits of coding practices can help identify areas for improvement and ensure compliance with payer requirements.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for K00-K99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for K00-K99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by K51.911?

K51.911 covers ulcerative colitis that is unspecified in terms of extent and severity but includes symptoms such as rectal bleeding. It does not specify whether the disease is limited to the rectum or involves other parts of the colon.

When should K51.911 be used instead of related codes?

K51.911 should be used when the extent of ulcerative colitis is not documented or when the clinical presentation includes rectal bleeding without further specification. If the disease is localized or has specific characteristics, more precise codes such as K51.912 should be considered.

What documentation supports K51.911?

Documentation should include a detailed clinical history, physical examination findings, results from stool tests, and endoscopic findings that confirm the diagnosis of ulcerative colitis with rectal bleeding. Clear notes on the absence of specified disease extent are also necessary.