The ICD-10-CM classifies CKD based on severity. The severity of CKD is designated by stages 1-5. Stage 2, code N18.2, equates to mild CKD; stage 3, codes N18.30-N18.32, equate to moderate CKD; and stage 4, code N18.4, equates to severe CKD. Code N18.6, End stage renal disease (ESRD), is assigned when the provider has documented end- stage renal disease (ESRD). If both a stage of CKD and ESRD are documented, assign code N18.6 only.
N80.10
BookmarkEndometriosis of ovary, unspecified depth
Filed alongside this entry 40
under Tumor
- aortic body D44.7
- basal cell D48.5
- Brenner D27.9
- bronchial alveolar, intravascular D38.1
- carcinoid D3A.00
- carotid body D44.6
- Cock's peculiar L72.3
- glomus D18.00
- granulosa cell D39.1
- granulosa cell-theca cell D39.1
- Grawitz's C64
- hilar cell D27
- hilus cell D27
- Hurthle cell (benign) D34
- intravascular bronchial alveolar D38.1
- juxtaglomerular D41.0
- Klatskin's C24.0
- Krukenberg's C79.6
- lipid cell, ovary D27
- lipoid cell, ovary D27
- malignant C80.1
- mast cell D47.09
- neurogenic olfactory C30.0
- nonencapsulated sclerosing C73
- ovarian stromal D39.1
- phantom F45.8
- phyllodes D48.6
- placental site trophoblastic D39.2
- Pott's puffy M86.8X8
- Rathke's pouch D44.3
- Sampson's N80.10
- sclerosing stromal D27
- sternomastoid (congenital) Q68.0
- testicular D40.10
- syphilitic, brain A52.17
- testicular stromal D40.1
- theca cell-granulosa cell D39.1
- trophoblastic, placental site D39.2
- turban D23.4
- Wilms' C64
Index entries, exactly as the book files them. This says they are listed together — not that any of them is documented in your chart.
Not billable — category only FY2027 2026-10-01 → 2027-09-30
FY2023–2027 only
This is the unspecified option. 2 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
How to use this page
Everything the published sources say about one code, on one page.
- Read the Excludes1 block first — it is the one that stops you coding this at all alongside another code.
- Excludes2, Code first, Use additional and Includes follow. A note inherited from a parent category is labelled with the category it came from, so you can see why it applies.
- Official Guidelines sit below. "Guidelines naming this code" cite the code or a range containing it; "Chapter guidance" is the general guidance for its chapter and is the weaker signal.
- Guideline text is quoted verbatim with its section number and page, so you can check it against the published document.
- Risk-model chips show which published CMS models map this code.
What this page does not do
- Guidance is quoted, never paraphrased — a paraphrase of a coding rule is a different rule.
- Medication candidates, where shown, are matched by condition *name* and are offered as candidates for you to judge. They are not "the drugs for this code".
Exclusions8never code together
N00-N99chapter
Excludes2
- certain conditions originating in the perinatal period (P04-P96)P04-P96
- certain infectious and parasitic diseases (A00-B99)A00-B99
- complications of pregnancy, childbirth and the puerperium (O00-O9A)O00-O9A
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)Q00-Q99
- endocrine, nutritional and metabolic diseases (E00-E88)E00-E88
- injury, poisoning and certain other consequences of external causes (S00-T88)S00-T88
- neoplasms (C00-D49)C00-D49
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)R00-R94
Excludes2 — not included here, but the patient may have both. Code both when documented.
Instructional notes
No further instructional notes apply.
Official Guidelines3
ICD-10-CM Official Guidelines for Coding and Reporting, quoted in full. Published by CMS and NCHS; in the public domain.
Patients who have undergone kidney transplant may still have some form of chronic kidney disease (CKD) because the kidney transplant may not fully restore kidney function. Therefore, the presence of CKD alone does not constitute a transplant complication. Assign the appropriate N18 code for the patient’s stage of CKD and code Z94.0, Kidney transplant status. If a transplant complication such as failure or rejection or other transplant complication is documented, see section I.C.19.g for information on coding complications of a kidney transplant. If the documentation is unclear as to whether the patient has a complication of the transplant, query the provider.
Patients with CKD may also suffer from other serious conditions, most commonly diabetes mellitus and hypertension. The sequencing of the CKD code in relationship to codes for other contributing conditions is based on the conventions in the Tabular List. See I.C.9. Hypertensive chronic kidney disease. See I.C.19. Chronic kidney disease and kidney transplant complications.
Index entries leading here7
- Cyst (colloid) (mucous) (simple) (retention)
- Chocolate cyst (ovary) N80.10
- Cystoma — see also Neoplasm, benign, by site
- endometrial, ovary N80.10
- Endometriosis N80.9
- ovary (unspecified depth) N80.10
- Tumor — see also Neoplasm, unspecified behavior, by site
- Sampson's N80.10
- Sampson's cyst or tumor N80.10
- Transplants, ovarian, endometrial N80.10
Alongside this code2same parent — N80.1
Subordinate codes4
Medications1
MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.