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Z90.49
ICD-10-CM
Appendectomy

Find information on appendectomy, also known as appendix removal or appendicectomy. Learn about the clinical documentation and medical coding guidelines for an appendectomy diagnosis. This resource offers insights into healthcare best practices related to appendix removal surgery and supports accurate medical coding for optimal reimbursement. Explore details related to appendectomy procedures and postoperative care.

Also known as

Appendix removal
Appendicectomy
removal appendix
+1 more

Diagnosis Snapshot

Key Facts
  • Definition : Surgical removal of the appendix, a small pouch attached to the large intestine.
  • Clinical Signs : Right lower abdominal pain, nausea, vomiting, fever, loss of appetite.
  • Common Settings : Emergency room, hospital operating room, surgical clinic.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC Z90.49 Coding
K35-K38

Diseases of appendix

Covers appendicitis and other appendix disorders.

0DTJ0ZZ-0DTJ4ZZ

Laparoscopic appendectomy

Codes for laparoscopic removal of the appendix.

0DB60ZZ-0DB64ZZ

Open appendectomy

Codes for open surgical removal of the appendix.

Code-Specific Guidance

Decision Tree for

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

Is the appendectomy performed for acute appendicitis?

  • Yes

    With peritonitis?

  • No

    Is it prophylactic?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Surgical removal of the appendix.
Inflammation of the appendix.
Appendix tumor, benign or malignant.

Documentation Best Practices

Documentation Checklist
  • Appendectomy ICD-10 code (e.g., K35.80)
  • Location of appendix (e.g., RLQ)
  • Surgical approach (e.g., laparoscopic, open)
  • Confirmation of appendicitis (e.g., inflamed)
  • Post-op instructions documented

Coding and Audit Risks

Common Risks
  • Unspecified Appendectomy

    Coding for 'Appendectomy' lacks laterality (right/left) or approach (open/laparoscopic) impacting reimbursement and quality metrics.

  • Complicated Appendectomy

    Missing documentation of complications (e.g., peritonitis, abscess) leads to undercoding and lost revenue. CDI crucial.

  • Incorrect Appendix Diagnosis

    Miscoded appendicitis as primary diagnosis instead of a secondary diagnosis with peritonitis causing compliance issues.

Mitigation Tips

Best Practices
  • Document appendix location, size, inflammation for accurate coding.
  • Appendicitis severity details (acute, gangrenous) improve CDI.
  • Image study reports confirming appendicitis crucial for compliance.
  • Laparoscopic vs open approach impacts coding: clearly document.
  • Record any incidental appendectomy findings to optimize reimbursement.

Clinical Decision Support

Checklist
  • Verify RLQ pain, McBurney's point tenderness, fever documented
  • Confirm WBC count elevation, imaging results (US/CT) support appendicitis
  • Exclude alternative diagnoses mimicking appendicitis (e.g., ovarian torsion)
  • Document Alvarado score or Appendicitis Inflammatory Response score
  • Pre-op antibiotics administered, surgical consent obtained and documented

Reimbursement and Quality Metrics

Impact Summary
  • Appendectomy (CPT 44950, 44960, 44970) reimbursement depends on procedure complexity and payer contracts. Coding accuracy crucial for maximizing revenue.
  • Quality metrics impacted: Surgical site infection (SSI) rates, readmission rates within 30 days, average length of stay (ALOS).
  • Accurate appendectomy coding (ICD-10 K35.80, K35.89, K35.9) affects hospital quality reporting and value-based payments.
  • Timely and accurate billing and coding for appendectomy improves clean claim rates, reducing denials and administrative costs.

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.

Frequently Asked Questions

Common Questions and Answers

Q: What are the most reliable diagnostic approaches for acute appendicitis in pregnant patients, considering potential risks to the fetus?

A: Diagnosing acute appendicitis during pregnancy can be challenging due to anatomical and physiological changes. Ultrasound is often the preferred initial imaging modality due to its safety for the fetus. However, its sensitivity can be limited, particularly in later trimesters. MRI without contrast is another safe option offering higher sensitivity and specificity. Consider implementing a graded approach, starting with ultrasound and escalating to MRI if the diagnosis remains uncertain. Explore how clinical findings, laboratory markers (like white blood cell count and C-reactive protein), and serial examinations can be combined with imaging to improve diagnostic accuracy while minimizing risks. Learn more about the use of Alvarado score and Appendicitis Inflammatory Response score adaptations for pregnant patients.

Q: How do I differentiate between appendicitis and ovarian torsion in female patients presenting with right lower quadrant pain, and what are the immediate steps for management?

A: Differentiating appendicitis from ovarian torsion can be clinically difficult as both present with right lower quadrant pain. A thorough pelvic examination is crucial. Ultrasound is the first-line imaging modality for both conditions. Appendicitis typically presents with pericecal inflammation and a non-compressible appendix, while ovarian torsion presents with an enlarged ovary with absent or reduced blood flow. Surgical consultation is crucial for both suspected appendicitis and ovarian torsion, as delays in diagnosis and intervention can lead to serious complications. For suspected ovarian torsion, a gynecological consultation is essential for immediate surgical exploration to preserve ovarian function. Explore how Doppler ultrasound can aid in assessing ovarian blood flow. Consider implementing a standardized protocol for evaluating right lower quadrant pain in female patients to ensure timely and accurate diagnosis.

Quick Tips

Practical Coding Tips
  • Code appendectomy as 44950-44970
  • Verify diagnosis documentation specificity
  • Check for incidental appendectomy coding
  • Consider laparoscopic vs open approach
  • Document any complications for coding

Documentation Templates

Patient presents with acute right lower quadrant abdominal pain consistent with possible appendicitis.  Symptoms onset reported as [timeframe] and include progressively worsening pain, initially periumbilical or epigastric, migrating to McBurney's point.  Patient also reports anorexia, nausea, and vomiting.  Physical examination reveals rebound tenderness, guarding, and positive Rovsing's sign.  Differential diagnosis includes mesenteric adenitis, ovarian cyst, and pelvic inflammatory disease.  Laboratory studies show leukocytosis with a left shift.  Abdominal CT scan with contrast demonstrates a dilated, non-compressible appendix with periappendiceal fat stranding, confirming the diagnosis of acute appendicitis.  Surgical consult obtained and patient consented for laparoscopic appendectomy.  Preoperative diagnosis:  Acute appendicitis.  Postoperative diagnosis: Acute appendicitis.  Procedure: Laparoscopic appendectomy.  The patient was taken to the operating room, placed under general anesthesia, and prepped and draped in the usual sterile fashion.  A laparoscopic appendectomy was performed without complications. The appendix was removed and sent for pathological examination.  The patient tolerated the procedure well and was transferred to the postoperative recovery unit in stable condition.  Plan:  Postoperative care including pain management, wound care, and monitoring for signs of infection.  Discharge instructions provided regarding activity restrictions, diet, and follow-up appointment.  ICD-10 code: K35.80 (Acute appendicitis without perforation or abscess).  CPT code: 44970 (Laparoscopic appendectomy).
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