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ICD-10-CM 2027 diagnosis code

N80.A2Deep endometriosis of bladder

✓ Billable / specificFemale only

N80.A2 is a valid, billable ICD-10-CM code for deep endometriosis of bladder. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Code last changed in FY2023 (effective October 1, 2022). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N80.A2

N80.A2 is the ICD-10-CM diagnosis code for deep endometriosis of bladder. It belongs to category N80 (endometriosis), block N80-N98 (noninflammatory disorders of female genital tract) and chapter 14 (diseases of the genitourinary system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within N80.A (endometriosis of bladder and ureters), N80.A2 is specifically for deep endometriosis of bladder. Related codes cover endometriosis of bladder, unspecified depth (N80.A0), superficial endometriosis of bladder (N80.A1), superficial endometriosis of ureter (N80.A4), deep endometriosis of ureter (N80.A5) and endometriosis of ureter, unspecified depth (N80.A6).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 698 (Other Kidney and Urinary Tract Diagnoses with MCC, relative weight 1.6398), DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC, relative weight 1.0003) and DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC, relative weight 0.6741), in MDC 11 (Diseases and Disorders of the Kidney and Urinary Tract), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is on the CMS list of diagnoses consistent only with female patients (the sex-conflict edit itself was retired in FY2025).

It was added in FY2023, effective October 1, 2022.

Notes that apply from higher levels

Instructions written at a parent level also apply to N80.A2.

Broader instructions also apply from Chapter 14: Diseases of the genitourinary system.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to N80.A2.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2023 (effective 10/1/2022): Added
  • No changes since FY2023.

Common questions about N80.A2

Is N80.A2 billable?

Yes. N80.A2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can N80.A2 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict N80.A2 as a principal diagnosis.

Is N80.A2 a CC or MCC?

No. N80.A2 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does N80.A2 group to?

N80.A2 is used in the MS-DRG v44.0 logic for MS-DRG 698 (Other Kidney and Urinary Tract Diagnoses with MCC), MS-DRG 699 (Other Kidney and Urinary Tract Diagnoses with CC) and MS-DRG 700 (Other Kidney and Urinary Tract Diagnoses without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.