N80.342 ICD-10-CM Code: Deep endometriosis of the left pelvic sidewall
N80.342 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC Buddy coding tools
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FY 2026 Apr update / Diseases of the genitourinary system (N00-N99) / Noninflammatory disorders of female genital tract (N80-N98)
N80.342
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceDeep endometriosis of the left pelvic sidewall
Endometriosis is a condition where tissue similar to the uterine lining grows outside the uterus. This code specifically indicates deep endometriosis affecting the left side of the pelvic sidewall.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
OfficialICD-10-CM does not list inclusion terms for N80.342 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for N80.342 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for N80.342 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for N80.342 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for N80.342 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for N80.342 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for N80.342 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is N80.342 an HCC code?
No. N80.342 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- N80.342
- Description
- Deep endometriosis of the left pelvic sidewall
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF reference coefficient
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
N80.342 is the ICD-10-CM diagnosis code for deep endometriosis of the left pelvic sidewall. Endometriosis is a condition where tissue similar to the uterine lining grows outside the uterus. This code specifically indicates deep endometriosis affecting the left side of the pelvic sidewall. N80.342 sits in the ICD-10-CM chapter for diseases of the genitourinary system (n00-n99), within the section covering noninflammatory disorders of female genital tract (n80-n98).
N80.342 is a billable ICD-10-CM code, but the current payload does not show a mapping under the CMS-HCC V28, V24, ESRD, or RxHCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.
Verify documentation specifies 'deep' endometriosis and confirms left-sided location before assigning this code.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for N80.342 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify documentation specifies 'deep' endometriosis and confirms left-sided location before assigning this code
- •Distinguish between superficial, unspecified depth, and deep endometriosis as they have different codes