N80.40 — Endometriosis of rectovaginal septum, unspecified involvement of vagina
N80.40 is a billable, specific ICD-10-CM code for endometriosis of rectovaginal septum, unspecified involvement of vagina. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Endometriosis of the rectovaginal septum, NOS
Risk adjustment
N80.40 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
N80.40 is named in 4 Medicare coverage policies — 4 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56421Billing and Coding: CT of the Abdomen and Pelvis
- A59160Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs
- A59160Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs
- A59160Billing and Coding: Luteinizing Hormone-Releasing Hormone (LHRH) Analogs
How N80.40 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to N80.40.
- Endometriosis›rectovaginal septum
Related codes at this level
Codes that share N80.4. If N80.40 is not quite right, the correct code is usually one of these.
Questions about N80.40
- Is N80.40 a billable ICD-10-CM code?
- Yes. N80.40 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does N80.40 sit in the tabular list?
- Diseases of the genitourinary system (N00-N99), in the block Noninflammatory disorders of female genital tract (N80-N98).