N18.9
BillableChronic kidney disease, unspecified
Chronic kidney disease, unspecified
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Chronic renal disease
- Chronic renal failure NOS
- Chronic renal insufficiency
- Chronic uremia NOS
- Diffuse sclerosing glomerulonephritis NOS
Excludes 2
Conditions not included here, but the patient may have both
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- congenital renal failure (P96.0)
- drug- and heavy-metal-induced tubulo-interstitial and tubular conditions (N14.-)
- extrarenal uremia (R39.2)
- hemolytic-uremic syndrome (D59.3-)
- hepatorenal syndrome (K76.7)
- postpartum hepatorenal syndrome (O90.41)
- posttraumatic renal failure (T79.5)
- prerenal uremia (R39.2)
- renal failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.4)
- renal failure following labor and delivery (O90.41)
- renal failure postprocedural (N99.0)
Code First
The underlying condition must be sequenced before this code
Use Additional Code
Additional codes that should follow this code
- code to identify kidney transplant status, if applicable, (Z94.0)
Also Known As / Clinical Terms
SNOMED CT
- Benign hypertensive renal disease193003
- Hypertensive heart AND renal disease complicating AND/OR reason for care during childbirth1474004
- Drug-related polyneuropathy7339009
- Polyneuropathy caused by drug7339009
- Uraemic neuropathy11659006
- Uremic neuropathy11659006
- Sclerosing glomerulonephritis13335004
- Hyperphosphataemia20165001
- Hyperphosphatemia20165001
- Hypertensive heart disease complicating AND/OR reason for care during pregnancy20753005
- Hypertensive heart AND renal disease complicating AND/OR reason for care during pregnancy22966008
- Renal hypertension28119000
- Drug resistance31438003
- Cardiovascular renal disease31881008
- Arteriosclerosis of kidney32916005
- Chronic arteriosclerotic nephritis32916005
- Interstitial arteriosclerotic nephritis32916005
- Nephrosclerosis32916005
- Renal arteriosclerosis32916005
- Renal sclerosis32916005
- Avitaminosis D34713006
- Vitamin D deficiency34713006
- Benign hypertensive heart disease36221001
- Hypertensive nephropathy38481006
- Hypertensive renal disease38481006
- Renal disease due to hypertension38481006
- Hypertension secondary to renal disease complicating AND/OR reason for care during puerperium39727004
- Polyneuropathy due to toxic agents45600000
- Toxic polyneuropathy45600000
- Hypertensive heart AND renal disease in obstetric context49102001
- Hypertensive renal disease complicating AND/OR reason for care during childbirth49171007
- Anaemia of chronic renal failure49708008
- Anaemia of chronic renal insufficiency49708008
- Anemia of chronic renal failure49708008
- Anemia of chronic renal insufficiency49708008
- Malignant hypertensive heart disease54225002
- Light chain nephropathy55006001
- Parenchymal renal hypertension57684003
- Hypertensive heart disease complicating AND/OR reason for care during childbirth59733002
- Benign arteriolar nephrosclerosis62240004
- Malignant hypertensive renal disease65443008
- Benign hypertensive heart AND renal disease66052004
- Malignant hypertensive heart AND renal disease66610008
- Hypertensive renal disease complicating AND/OR reason for care during pregnancy66709007
- Hypertensive renal disease in obstetric context73030000
- Chronic hypertensive uraemia78544004
- Chronic hypertensive uremia78544004
- Pericarditis co-occurrent and due to uraemia80119007
- Pericarditis co-occurrent and due to uremia80119007
- Pericarditis secondary to uraemia80119007
- Pericarditis secondary to uremia80119007
- Uraemic pericarditis80119007
- Uremic pericarditis80119007
- Malignant arteriolar nephrosclerosis81363003
- Cardiorenal disease86234004
- Hypertensive heart AND renal disease86234004
- Arteriolar nephrosclerosis90493000
- Arteriolar sclerosis of renal arterioles90493000
- Arteriosclerosis of renal arterioles90493000
- Hypertension secondary to renal disease in obstetric context111438007
- Uraemic polyneuropathy193196004
- Uremic polyneuropathy193196004
- Hypertensive heart and renal disease with (congestive) heart failure194779001
- Hypertension complicating pregnancy, childbirth and the puerperium198941007
- Renal hypertension complicating pregnancy, childbirth and the puerperium198949009
- Pre-existing hypertensive heart disease complicating pregnancy, childbirth and the puerperium199006004
- Pre-existing hypertensive heart and renal disease complicating pregnancy, childbirth and the puerperium199007008
- Anaemia of renal disease234348004
- Anemia of renal disease234348004
- Nephrogenic anaemia234348004
- Nephrogenic anemia234348004
- Acute on chronic renal failure236433006
- Acute-on-chronic renal failure236433006
- Renal involvement in malignant disease236507000
- Acquired hypophosphataemia237902005
- Acquired hypophosphatemia237902005
- Raised calcium phosphate product237904006
- Renal failure-associated hyperphosphataemia237904006
- Renal failure-associated hyperphosphatemia237904006
- Neuropathy in renal failure267602002
- Anaemia secondary to renal failure310647000
- Anemia secondary to renal failure310647000
- Deficiency of alkaline phosphatase360792001
- Disorder of vitamin D386068004
- Erythropoietin resistance in anaemia of chronic kidney disease444271000
- Erythropoietin resistance in anemia of chronic kidney disease444271000
- Cardiorenal syndrome445236007
- Hypertensive nephrosclerosis473392002
- Recurrent post-transplant renal disease707148007
- Recurrent renal disease following transplantation of kidney707148007
- Anaemia co-occurrent and due to chronic kidney disease707323002
- Anaemia in chronic kidney disease707323002
- Anemia co-occurrent and due to chronic kidney disease707323002
- Anemia in chronic kidney disease707323002
- CKD - chronic kidney disease709044004
- Chronic kidney disease709044004
- Chronic renal disease709044004
- Chronic renal impairment709044004
- CKD-MBD - chronic kidney disease mineral and bone disorder713313000
- Chronic kidney disease mineral and bone disorder713313000
- Low alkaline phosphatase due to chronic kidney disease721183009
- Low alkaline phosphatase in chronic kidney disease721183009
- Chronic kidney disease following donor nephrectomy722098007
- CKD (chronic kidney disease) due to and following tumor nephrectomy722149000
- CKD (chronic kidney disease) due to and following tumour nephrectomy722149000
- Chronic kidney disease due to and following excision of neoplasm of kidney722149000
- Chronic kidney disease due to and following tumor nephrectomy722149000
- Chronic kidney disease due to and following tumour nephrectomy722149000
- Chronic kidney disease due to systemic infection722150000
- Chronic kidney disease due to traumatic loss of kidney722467000
- Renal insufficiency723188008
- Renal insufficiency syndrome723188008
- Chronic renal insufficiency723190009
- Calcification of soft tissue due to chronic kidney disease1144916002
- Soft tissue calcification due to chronic kidney disease1144916002
- Vitamin D deficiency due to chronic kidney disease1148896009
- Hypophosphataemia due to chronic kidney disease1148926002
- Hypophosphatemia due to chronic kidney disease1148926002
- Hypocalcaemia due to chronic kidney disease1148928001
- Hypocalcemia due to chronic kidney disease1148928001
- Hypercalcaemia due to chronic kidney disease1148934008
- Hypercalcemia due to chronic kidney disease1148934008
- Hyperphosphataemia due to chronic kidney disease1148936005
- Hyperphosphatemia due to chronic kidney disease1148936005
- Serum calcium below reference range1187258003
- Impaired renal function following surgical procedure1259460004
- Postoperative renal impairment1259460004
- Chronic kidney disease with osteoporosis1295482007
- Osteoporosis due to chronic kidney disease1295482007
- Anemia, pre-ESRD erythropoietin protocol1801000119106
- Anemia, pre-end stage renal disease on erythropoietin protocol1801000119106
- Benign hypertensive heart disease and chronic kidney disease449631000124102
- Benign hypertensive heart disease and chronic renal disease449631000124102
- Chronic disease-related malnutrition441971000124107
- Chronic kidney disease due to benign hypertension284961000119106
- Chronic kidney disease due to hypertension104931000119100
- Chronic kidney disease due to type 1 diabetes mellitus96441000119101
- Chronic kidney disease due to type I diabetes mellitus96441000119101
- Chronic kidney disease due to type 2 diabetes mellitus771000119108
- Chronic renal impairment due to type 2 diabetes mellitus771000119108
- Chronic renal impairment due to type II diabetes mellitus771000119108
- Diabetic chronic renal impairment due to type 2 diabetes mellitus771000119108
- Hypertension in chronic kidney disease due to type 1 diabetes mellitus71701000119105
- Hypertension in chronic kidney disease due to type I diabetes mellitus71701000119105
- Hypertension in chronic kidney disease due to type 2 diabetes mellitus71421000119105
- Hypertension in chronic kidney disease due to type II diabetes mellitus71421000119105
- Hypertensive heart AND chronic kidney disease on dialysis96701000119107
- Hypertensive heart AND chronic kidney disease with congestive heart failure15781000119107
- Hypertensive heart and chronic kidney disease8501000119104
- Pre-existing hypertensive chronic kidney disease in mother complicating pregnancy118781000119108
- Preexisting hypertensive chronic kidney disease in pregnancy118781000119108
- Pre-existing hypertensive heart and chronic kidney disease in mother complicating childbirth10757401000119104
- Preexisting hypertensive heart and chronic kidney disease in childbirth10757401000119104
- Pre-existing hypertensive heart and chronic kidney disease in mother complicating pregnancy10757481000119107
- Preexisting hypertensive heart and chronic kidney disease in pregnancy10757481000119107
- Pre-existing hypertensive heart disease in mother complicating childbirth10757441000119102
- Preexisting hypertensive heart disease in childbirth10757441000119102
- Pre-existing hypertensive heart disease in mother complicating pregnancy10759031000119106
- Preexisting hypertensive heart disease in pregnancy10759031000119106
UMLS
- CKDC1561643
- CKD - Chronic Kidney DiseaseC1561643
- CKD - chronic kidney diseaseC1561643
- Chronic Kidney DiseaseC1561643
- Chronic Kidney DiseasesC1561643
- Chronic Renal DiseasesC1561643
- Chronic kidney diseaseC1561643
- Chronic kidney disease (CKD)C1561643
- Chronic kidney disease (disorder)C1561643
- Chronic kidney disease, unspecifiedC1561643
- Disease, Chronic KidneyC1561643
- Disease, Chronic RenalC1561643
- Diseases, Chronic KidneyC1561643
- Diseases, Chronic RenalC1561643
- Kidney Disease, ChronicC1561643
- Kidney Diseases, ChronicC1561643
- Loss of renal functionC1561643
- Renal Disease, ChronicC1561643
- Renal Diseases, ChronicC1561643
- chronic disease renalC1561643
- chronic diseases renalC1561643
- chronic renal diseaseC1561643
- renal disease chronicC1561643
- CRFC0022661
- CRF - Chronic Renal FailureC0022661
- CRF - Chronic renal failureC0022661
- Chronic Kidney FailureC0022661
- Chronic Renal DiseaseC0022661
- Chronic Renal FailureC0022661
- Chronic renal diseaseC0022661
- Chronic renal failureC0022661
- Chronic renal failure NOSC0022661
- Chronic renal failure syndromeC0022661
- Chronic renal failure syndrome (disorder)C0022661
- Disease, End-Stage KidneyC0022661
- Disease, End-Stage RenalC0022661
- END STAGE KIDNEY DISC0022661
- END STAGE RENAL DISC0022661
- ESCRF - End stage chronic renal failureC0022661
- ESRDC0022661
- ESRD (end stage renal disease)C0022661
- ESRD - End stage renal diseaseC0022661
- ESRF - End stage renal failureC0022661
- End Stage Kidney DiseaseC0022661
- End Stage Renal DiseaseC0022661
- End stage chronic renal failureC0022661
- End stage kidney diseaseC0022661
- End stage renal diseaseC0022661
- End stage renal disease (ESRD)C0022661
- End stage renal failureC0022661
- End-Stage Kidney DiseaseC0022661
- End-Stage Renal DiseaseC0022661
- End-Stage Renal FailureC0022661
- End-stage kidney diseaseC0022661
- End-stage renal diseaseC0022661
- End-stage renal disease (disorder)C0022661
- End-stage renal failureC0022661
- Kidney Disease, End-StageC0022661
- Kidney Failure, ChronicC0022661
- Kidney failure chronicC0022661
- RENAL DIS END STAGEC0022661
- Renal Disease, End StageC0022661
- Renal Disease, End-StageC0022661
- Renal Failure, ChronicC0022661
- Renal Failure, End StageC0022661
- Renal Failure, End-StageC0022661
- Renal failure chronicC0022661
- Renal failure, chronicC0022661
- chronic kidney failureC0022661
- chronic renal failureC0022661
- chronic renal failure (CRF)C0022661
- end stage kidney diseaseC0022661
- end stage renal diseaseC0022661
- end stage renal disease (ESRD)C0022661
- end stage renal failureC0022661
- end-stage kidney diseaseC0022661
- end-stage renal diseaseC0022661
- end-stage renal failureC0022661
- esrdC0022661
- Chronic Kidney InsufficienciesC0403447
- Chronic Kidney InsufficiencyC0403447
- Chronic Renal InsufficienciesC0403447
- Chronic Renal InsufficiencyC0403447
- Chronic renal impairmentC0403447
- Chronic renal insufficiencyC0403447
- Chronic renal insufficiency (disorder)C0403447
- Kidney Insufficiencies, ChronicC0403447
- Kidney Insufficiency, ChronicC0403447
- Renal Insufficiencies, ChronicC0403447
- Renal Insufficiency, ChronicC0403447
- chronic kidney insufficiencyC0403447
- chronic renal insufficiencyC0403447
- Chronic uraemiaC1579029
- Chronic uremiaC1579029
- Chronic uremia NOSC1579029
- Diffuse sclerosing glomerulonephritis NOSC1398790
Frequently Asked Questions
What is ICD-10 code N18.9?
ICD-10-CM code N18.9 represents "Chronic kidney disease, unspecified". It is a billable/specific code that can be used on a claim.
Is N18.9 a billable code?
Yes, N18.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is N18.9 in?
N18.9 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
Are additional codes required with N18.9?
Yes, when using N18.9 you should also code: code to identify kidney transplant status, if applicable, (Z94.0).
What SNOMED CT codes does N18.9 map to?
N18.9 maps to 91 SNOMED CT concepts: 237902005, 236433006, 707323002, 49708008, 234348004, and 86 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for N18.9?
N18.9 is linked to 5 UMLS Concept Unique Identifiers: C1561643, C0022661, C0403447, C1579029, C1398790. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.