N80.349 ICD-10-CM Code: Deep endometriosis of the pelvic sidewall, unspecified side
N80.349 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · HCC coding software
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FY 2026 Apr update / Diseases of the genitourinary system (N00-N99) / Noninflammatory disorders of female genital tract (N80-N98)
N80.349
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceDeep endometriosis of the pelvic sidewall, unspecified side
This code is used when deep endometriosis of the pelvic sidewall is documented but the specific side (left, right, or bilateral) is not specified in the medical record.
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 N80.349 in this effective period.
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for N80.349 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for N80.349 in this effective period.
Excludes 1
OfficialICD-10-CM does not list Excludes 1 notes for N80.349 in this effective period.
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for N80.349 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for N80.349 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for N80.349 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 N80.349 an HCC code?
No. N80.349 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- N80.349
- Description
- Deep endometriosis of the pelvic sidewall, unspecified side
- 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
N80.349 is the ICD-10-CM diagnosis code for deep endometriosis of the pelvic sidewall, unspecified side. This code is used when deep endometriosis of the pelvic sidewall is documented but the specific side (left, right, or bilateral) is not specified in the medical record. N80.349 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).
N80.349 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.
This is a default code when laterality cannot be determined from documentation.
HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for N80.349 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This is a default code when laterality cannot be determined from documentation
- •Query the provider if possible to obtain specific laterality information for more precise coding