ICD-10 N42.31
Billable / SpecificProstatic intraepithelial neoplasia
About ICD-10-CM N42.31
ICD-10-CM code N42.31 represents Prostatic intraepithelial neoplasia. This is a billable/specific code in the Genitourinary System chapter (block N42). The 2026 edition of ICD-10-CM N42.31 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under N42.31. Per CMS ICD-10-CM Tabular 2026.
- PIN
- Prostatic intraepithelial neoplasia I (PIN I)
- Prostatic intraepithelial neoplasia II (PIN II)
Type 1 Excludes
Pure excludes, these codes can never be coded together with N42.31. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- prostatic intraepithelial neoplasia III (PIN III) (D07.5)
Medicare LCD Coverage for N42.31
Local Coverage Determinations (LCDs) from CMS MACs that list N42.31 as a covered diagnosis.
Showing top 10 of 325 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing N42.31.
4 Medicare
CPT Codes Commonly Billed with N42.31
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Convert N42.31 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| N42.31 | 6023 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To N42.31
Other codes in section N40-N53 (Diseases of male genital organs).
ICD-10 N42.31, Billing FAQ
Is ICD-10 code N42.31 billable? +
Yes, N42.31 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to N42.31? +
ICD-10 N42.31 includes: PIN; Prostatic intraepithelial neoplasia I (PIN I); Prostatic intraepithelial neoplasia II (PIN II).
What codes are Type 1 Excludes for N42.31? +
Type 1 Excludes (never code together with N42.31): prostatic intraepithelial neoplasia III (PIN III) (D07.5)
What ICD-9 codes does N42.31 map to? +
Per CMS GEMs, N42.31 maps to ICD-9 codes: 6023. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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