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v1.0.0
ICD-10 Guide
ICD-10 CodesN42.32

N42.32

Billable

Atypical small acinar proliferation of prostate

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/18/2025

Code Description

ICD-10 N42.32 is a billable code used to indicate a diagnosis of atypical small acinar proliferation of prostate.

Key Diagnostic Point:

Atypical small acinar proliferation (ASAP) of the prostate is a histological diagnosis characterized by the presence of atypical small acini in prostate tissue. This condition is often identified during prostate biopsies and is significant due to its potential association with prostate cancer. Patients may present with symptoms related to benign prostatic hyperplasia (BPH) or prostatitis, including urinary frequency, urgency, and difficulty in urination. The diagnosis of ASAP does not confirm malignancy but indicates a need for careful monitoring and possibly further diagnostic evaluation, such as repeat biopsies or imaging studies. The condition may also influence prostate-specific antigen (PSA) levels, which are often elevated in patients with prostate disorders. Management strategies may include urological procedures, lifestyle modifications, and pharmacological treatments aimed at alleviating symptoms associated with BPH or prostatitis. Understanding the implications of ASAP is crucial for urologists and pathologists in determining the appropriate follow-up and treatment plans for affected patients.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiation from benign conditions
  • Potential overlap with prostate cancer diagnoses
  • Need for precise documentation of biopsy findings
  • Variability in clinical presentation and management

Audit Risk Factors

  • Inadequate documentation of biopsy results
  • Failure to follow up on elevated PSA levels
  • Misclassification of ASAP as prostate cancer
  • Lack of clear treatment plans in medical records

Specialty Focus

Medical Specialties

Urology

Documentation Requirements

Detailed pathology reports, clinical notes on symptoms, and treatment plans.

Common Clinical Scenarios

Patients presenting with elevated PSA levels, abnormal digital rectal exams, or urinary symptoms.

Billing Considerations

Ensure that all biopsy findings are clearly documented and that follow-up plans are outlined.

Pathology

Documentation Requirements

Comprehensive histopathological reports detailing the findings of prostate biopsies.

Common Clinical Scenarios

Reviewing prostate biopsy specimens for atypical findings and determining the need for further evaluation.

Billing Considerations

Accurate description of atypical findings is crucial for appropriate coding and patient management.

Coding Guidelines

Inclusion Criteria

Use N42.32 When
  • According to the ICD
  • CM guidelines, N42
  • 32 should be used when there is a confirmed diagnosis of atypical small acinar proliferation based on biopsy results
  • It is important to document the clinical context and any associated symptoms or findings

Exclusion Criteria

Do NOT use N42.32 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

55700CPT Code

Prostate biopsy, needle, core, or incisional

Clinical Scenario

Used when a biopsy is performed to evaluate for ASAP.

Documentation Requirements

Pathology report detailing biopsy findings and clinical notes on indications for the procedure.

Specialty Considerations

Urologists must ensure that the biopsy results are clearly linked to the diagnosis of ASAP.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of prostate conditions, including atypical small acinar proliferation. This specificity aids in better tracking of patient outcomes and treatment efficacy.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of prostate conditions, including atypical small acinar proliferation. This specificity aids in better tracking of patient outcomes and treatment efficacy.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of prostate conditions, including atypical small acinar proliferation. This specificity aids in better tracking of patient outcomes and treatment efficacy.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is atypical small acinar proliferation?

Atypical small acinar proliferation is a histological finding in prostate biopsies that indicates the presence of atypical cells, which may suggest a risk for prostate cancer but does not confirm malignancy.