ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
ICD-10 CodesK51.319

K51.319

Billable

Ulcerative (chronic) rectosigmoiditis with unspecified complications

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

Code Description

ICD-10 K51.319 is a billable code used to indicate a diagnosis of ulcerative (chronic) rectosigmoiditis with unspecified complications.

Key Diagnostic Point:

K51.319 refers to ulcerative (chronic) rectosigmoiditis, a form of inflammatory bowel disease (IBD) that specifically affects the rectum and sigmoid colon. Clinically, patients may present with symptoms such as abdominal pain, diarrhea (often bloody), urgency, and tenesmus. The rectosigmoid area, which includes the last part of the colon and the rectum, becomes inflamed, leading to ulceration and potential complications. Disease progression can vary, with some patients experiencing intermittent flare-ups and periods of remission. Diagnostic considerations include a thorough patient history, physical examination, and confirmatory tests such as colonoscopy with biopsy to assess the extent of inflammation and rule out other conditions. The chronic nature of this condition necessitates ongoing management and monitoring to prevent complications such as severe bleeding, perforation, or colorectal cancer.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires comprehensive evaluation including imaging and endoscopic procedures.
  • Treatment complexity: Management may involve medications, dietary changes, and possibly surgery.
  • Documentation requirements: Detailed clinical documentation is essential for accurate coding and treatment justification.
  • Coding specificity: Requires precise coding to differentiate from other forms of ulcerative colitis.

Audit Risk Factors

  • Common coding errors: Misclassification with other types of ulcerative colitis.
  • Documentation gaps: Lack of detailed clinical notes regarding the extent and severity of the disease.
  • Billing challenges: Potential denials if documentation does not clearly support 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

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Ulcerative rectosigmoiditis significantly impacts patient quality of life and healthcare utilization. It can lead to increased hospital visits, surgeries, and long-term management strategies. Epidemiologically, the prevalence of IBD, including ulcerative colitis, is rising, necessitating effective public health strategies to manage and treat these conditions. Quality measures focus on symptom control, patient education, and regular monitoring to prevent complications.

ICD-9 vs ICD-10

Ulcerative rectosigmoiditis significantly impacts patient quality of life and healthcare utilization. It can lead to increased hospital visits, surgeries, and long-term management strategies. Epidemiologically, the prevalence of IBD, including ulcerative colitis, is rising, necessitating effective public health strategies to manage and treat these conditions. Quality measures focus on symptom control, patient education, and regular monitoring to prevent complications.

Reimbursement & Billing Impact

Reimbursement considerations include ensuring that the medical necessity for procedures such as colonoscopy and biopsies is clearly documented. Common denials may arise from insufficient documentation or failure to demonstrate the chronic nature of the condition. Best practices include maintaining thorough clinical notes, ensuring accurate coding, and regularly reviewing payer guidelines to avoid billing issues.

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 K51.319?

K51.319 covers chronic ulcerative rectosigmoiditis characterized by inflammation and ulceration of the rectum and sigmoid colon without specified complications. It is important to differentiate it from other forms of ulcerative colitis and IBD.

When should K51.319 be used instead of related codes?

K51.319 should be used when the condition specifically involves the rectosigmoid area and is chronic in nature. It is important to use this code when there are no specified complications, as opposed to codes that indicate more severe manifestations.

What documentation supports K51.319?

Documentation should include a detailed clinical history, results from colonoscopy and biopsy, symptom descriptions, and treatment plans. Clear notes on the chronicity and extent of the disease are crucial for supporting the use of K51.319.