N42.31 — Prostatic intraepithelial neoplasia
Is N42.31 billable?
Yes — N42.31 is billable for FY2027. N42.31 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. N42.31 may be submitted for encounters from October 1, 2026 through September 30, 2027.
N42.31 at a glance
| Code | N42.31 |
|---|---|
| Description | Prostatic intraepithelial neoplasia |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does N42.31 group to?
N42.31 sits in MDC 12 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 729Other Male Reproductive System Diagnoses with CC/MCCmedical
- 730Other Male Reproductive System Diagnoses without CC/MCCmedical
How is N42.31 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to N42.31. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Neoplasia › intraepithelial › prostate
- Neoplasia › intraepithelial › prostate › grade I
- Neoplasia › intraepithelial › prostate › grade II
Excludes1 — never code together
The conditions below can never be reported together with N42.31 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- prostatic intraepithelial neoplasia III (PIN III) (D07.5)
Inclusion terms
Alternative wording in documentation that is classified to N42.31.
- PIN
- Prostatic intraepithelial neoplasia I (PIN I)
- Prostatic intraepithelial neoplasia II (PIN II)
Excludes2 — not included here — inherited from Chapter 14
The conditions below are not part of N42.31, but a patient may have both at the same time. When documentation supports it, N42.31 and the excluded code may both be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
How long has N42.31 existed?
N42.31 first appears in FY2018 (FY2017 is not available, so it may have appeared then).
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.