N18.1
BillableChronic kidney disease, stage 1
Chronic kidney disease, stage 1
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
- •congenital renal failureP96.0
- •drug- and heavy-metal-induced tubulo-interstitial and tubular conditionsN14
- •extrarenal uremiaR39.2
- •hemolytic-uremic syndromeD59.3
- •hepatorenal syndromeK76.7
- •postpartum hepatorenal syndromeO90.41
- •posttraumatic renal failureT79.5
- •prerenal uremiaR39.2
- •renal failure complicating abortion or ectopic or molar pregnancy,O00-O07, O08.4
- •renal failure following labor and deliveryO90.41
- •renal failure postproceduralN99.0
Code First
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Additional codes that should follow this code
Related Codes(6)
Related Conditions
ICD-11 Equivalents(1)
ICD-11 Equivalents
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Also Known As / Clinical Terms(66)
SNOMED CT
- Benign hypertensive heart disease36221001
- Malignant hypertensive renal disease65443008
- CKD stage 1431855005
- Chronic kidney disease stage 1431855005
- 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
- Anaemia due to chronic kidney disease stage 1691381000119104
- Anemia due to chronic kidney disease stage 1691381000119104
- Benign hypertensive heart disease and chronic renal disease stage 1285041000119107
- Chronic kidney disease due to benign hypertension284961000119106
- Chronic kidney disease stage 1 due to benign hypertension284971000119100
- Chronic kidney disease stage 1 due to drug induced diabetes mellitus368421000119108
- Chronic kidney disease stage 1 due to hypertension117681000119102
- Chronic kidney disease stage 1 due to type 1 diabetes mellitus90721000119101
- Chronic kidney disease stage 1 due to type I diabetes mellitus90721000119101
- Chronic kidney disease stage 1 due to type 2 diabetes mellitus751000119104
- Chronic kidney disease stage 1 due to type II diabetes mellitus751000119104
- Diabetic stage 1 chronic renal impairment due to type 2 diabetes mellitus751000119104
- Diabetic nephropathy due to drug induced diabetes mellitus368201000119100
- Diabetic renal disease due to drug induced diabetes mellitus368201000119100
- Disorder of kidney due to drug induced diabetes mellitus368201000119100
- Nephropathy due to drug induced diabetes mellitus368201000119100
- Disorder of kidney due to secondary diabetes mellitus126551000119103
- Nephropathy due to secondary diabetes mellitus126551000119103
- Hypertensive heart AND chronic kidney disease stage 196751000119106
- Malignant hypertensive chronic kidney disease285831000119108
- Malignant hypertensive chronic kidney disease stage 1285851000119102
UMLS
Clinical Terms
- Anemia co-occurrent and due to chronic kidney disease
- Diabetic renal disease due to drug induced diabetes mellitus
- Nephropathy due to drug induced diabetes mellitus
- Anaemia in chronic kidney disease
- Malignant hypertensive renal disease
- Chronic kidney disease stage 1 due to type 1 diabetes mellitus
- Chronic kidney disease stage 1
- Chronic kidney disease stage 1 due to drug induced diabetes mellitus
- Chronic kidney disease due to benign hypertension
- Benign hypertensive heart disease and chronic renal disease stage 1
- Stage 1 chronic kidney disease
- Disorder of kidney due to secondary diabetes mellitus
- CKD stage 1
- Anaemia co-occurrent and due to chronic kidney disease
- Nephropathy due to secondary diabetes mellitus
- Anaemia due to chronic kidney disease stage 1
- Anemia due to chronic kidney disease stage 1
- Chronic kidney disease stage 1 due to benign hypertension
- Hypertensive heart AND chronic kidney disease stage 1
- Chronic kidney disease stage 1 due to type I diabetes mellitus
- Chronic kidney disease stage 1 due to type II diabetes mellitus
- Benign hypertensive heart disease
- Chronic kidney disease stage 1 due to hypertension
- Chronic kidney disease stage 1 due to type 2 diabetes mellitus
- Diabetic nephropathy due to drug induced diabetes mellitus
- Malignant hypertensive chronic kidney disease
- Chronic kidney disease stage 1 (disorder)
- Anemia in chronic kidney disease
- Disorder of kidney due to drug induced diabetes mellitus
- Diabetic stage 1 chronic renal impairment due to type 2 diabetes mellitus
- Malignant hypertensive chronic kidney disease stage 1
Frequently Asked Questions
What is the ICD-10 code for chronic kidney disease, stage 1?
The ICD-10-CM code for chronic kidney disease, stage 1 is N18.1. The full clinical description is "Chronic kidney disease, stage 1". N18.1 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code N18.1 mean?
ICD-10-CM code N18.1 represents “Chronic kidney disease, stage 1”. It is classified under Chapter 14: Diseases of the Genitourinary System and is a billable/specific code that can be used on a claim.
Is N18.1 a billable code?
Yes, N18.1 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is N18.1 in?
N18.1 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
Are additional codes required with N18.1?
Yes, when using N18.1, also report: kidney transplant status, if applicable, (Z94.0).
What SNOMED CT codes does N18.1 map to?
N18.1 maps to 17 SNOMED CT concepts: 707323002, 691381000119104, 36221001, 285041000119107, 431855005, and 12 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for N18.1?
N18.1 is linked to 1 UMLS Concept Unique Identifier: C2316401. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does N18.1 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like chronic kidney disease, stage 1 affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of N18.1?
N18.1 maps to the ICD-11 code: GB61.0 (Chronic kidney disease, stage 1).
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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.