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K57.32
ICD-10-CM
Sigmoid Diverticulitis

Find comprehensive information on sigmoid diverticulitis, including clinical documentation tips, ICD-10 codes (K57.3, K57.30, K57.31, K57.32, K57.39), SNOMED CT concepts, and healthcare resources for accurate diagnosis and coding. Learn about diverticulitis symptoms, treatment, complications like diverticular abscess or perforation, and best practices for medical record keeping. This resource supports healthcare professionals in efficient and accurate clinical documentation and coding related to sigmoid diverticulitis.

Also known as

Diverticulitis of the Sigmoid Colon
Sigmoid Colon Diverticulitis

Diagnosis Snapshot

Key Facts
  • Definition : Inflammation or infection of pouches in the sigmoid colon wall.
  • Clinical Signs : Lower left abdominal pain, fever, nausea, constipation or diarrhea.
  • Common Settings : Outpatient clinic, emergency room, hospital admission for severe cases.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC K57.32 Coding
K57

Diverticular disease of intestine

Covers diverticulitis and diverticulosis of any part of the intestine.

K57.8

Other diverticular disease of intestine

Includes sigmoid diverticulitis without perforation or abscess.

K57.2

Diverticulitis of large intestine with perforation and abscess

Specifically for complicated sigmoid diverticulitis with both perforation and abscess.

K57.3

Diverticulitis of large intestine with perforation without abscess

Specifically for complicated sigmoid diverticulitis with perforation but no abscess.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the sigmoid diverticulitis with perforation?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Sigmoid Diverticulitis
Diverticulosis
Ischemic Colitis

Documentation Best Practices

Documentation Checklist
  • Document LLQ pain/tenderness
  • Record fever, nausea, or vomiting
  • CT scan findings: diverticula, bowel wall thickening
  • WBC count elevation documented
  • Exclude other diagnoses (e.g., IBD, IBS)

Coding and Audit Risks

Common Risks
  • Unconfirmed Diagnosis

    Coding diverticulitis without explicit confirmation (e.g., imaging, pathology) risks inaccurate coding and potential denial of claims.

  • Specificity Lack

    Failing to code the specific location (sigmoid colon) and complications (e.g., abscess, perforation) leads to undercoding and lost revenue.

  • Acute vs. Chronic

    Miscoding acute diverticulitis as chronic or vice versa impacts quality metrics, reimbursement, and potentially triggers audits.

Mitigation Tips

Best Practices
  • Code diverticulitis accurately using ICD-10-CM K57. Document location.
  • Ensure CDI captures disease severity, complications for proper reimbursement.
  • Follow payer guidelines for imaging, antibiotics, and surgery for compliance.
  • Document response to treatment and any complications for optimal care.
  • Timely physician documentation supports accurate coding and billing compliance.

Clinical Decision Support

Checklist
  • 1. LLQ pain/tenderness documented?
  • 2. Fever or elevated WBCs present?
  • 3. CT confirms inflamed diverticula?
  • 4. Rule out other diagnoses (e.g., IBD, cancer)?
  • 5. Document Hinchey stage if applicable.

Reimbursement and Quality Metrics

Impact Summary
  • Sigmoid Diverticulitis: Reimbursement and Quality Metrics Impact Summary
  • Keywords: Medical Billing, Coding Accuracy, ICD-10 K57.3, DRG 329, Hospital Reporting, Quality Measures, Value-Based Care, Reimbursement Rates, Complication Risk, Denials Management, Case Mix Index
  • Impact 1: Accurate K57.3 coding maximizes reimbursement.
  • Impact 2: Complication coding (e.g., abscess, perforation) impacts DRG and CMI.
  • Impact 3: Quality metrics affected by sepsis rates and unplanned readmissions.
  • Impact 4: Timely documentation minimizes denials and optimizes revenue cycle.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Quick Tips

Practical Coding Tips
  • Code K57.32 for uncomplicated diverticulitis
  • Query for abscess/perforation if documented
  • Document location (sigmoid colon) for specificity
  • Use K57.33 for diverticulitis with bleeding
  • K57.9 for unspecified diverticulitis

Documentation Templates

Patient presents with complaints consistent with sigmoid diverticulitis.  Symptoms include left lower quadrant abdominal pain, described as cramping or steady,  accompanied by tenderness to palpation in the affected area.  The patient also reports changes in bowel habits, including constipation or diarrhea, and may exhibit nausea, vomiting, and fever.  A complete blood count reveals leukocytosis, suggestive of an inflammatory process.  Computed tomography scan of the abdomen and pelvis with intravenous contrast demonstrates findings consistent with acute diverticulitis of the sigmoid colon, including bowel wall thickening, pericolonic inflammation, and possible presence of a diverticulum.  No evidence of abscess or perforation is noted.  The patient's current presentation aligns with the Rome IV criteria for diverticulitis.  Differential diagnoses considered include irritable bowel syndrome, inflammatory bowel disease, and ischemic colitis.  The patient is diagnosed with uncomplicated acute sigmoid diverticulitis.  Plan of care includes bowel rest, a clear liquid diet, oral antibiotics consisting of metronidazole and ciprofloxacin, and pain management with acetaminophen.  Patient education provided regarding the importance of hydration, dietary modifications, and follow-up care.  The patient will be reassessed in 48-72 hours to monitor symptom resolution and determine the need for further intervention or hospitalization.  ICD-10 code K57.32, Acute sigmoid diverticulitis without perforation or abscess, assigned.