2027 ICD-10-CM Diagnosis Code Z99.2Dependence on renal dialysis
Z99.2 is a billable ICD-10-CM diagnosis code for dependence on renal dialysis. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 951. The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified status.
Z99.2 no longer risk-adjusts for Medicare Advantage: it mapped to HCC 134 under the retired CMS-HCC V24 model through payment year 2025 but maps to no category in the live V28 model. It still risk-adjusts in the PACE (CMS-HCC V22) category 134, ESRD (V21) category 134, ESRD (V24) category 134, and RxHCC Part D (V08) category 261 for payment year 2027.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z99.2.
Present on Admission (POA)Billing
Z99.2 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99).
Medicare Risk Adjustment (HCC)Billing
Z99.2 no longer risk-adjusts for Medicare Advantage: it maps to no payment category in the live CMS-HCC V28 model, although it still risk-adjusts in the other CMS models shown below.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Abdominal hernia as complication of peritoneal dialysis
- Acute disorder of hemodialysis
- Acute renal failure on dialysis
- Chronic kidney disease stage 5 due to drug induced diabetes mellitus
- Chronic kidney disease stage 5 due to hypertension
- Chronic kidney disease stage 5 due to hypertension on dialysis
- Chronic kidney disease stage 5 due to type 1 diabetes mellitus
- Chronic kidney disease stage 5 due to type 2 diabetes mellitus
- Chronic kidney disease stage 5 on dialysis
- Chronic kidney disease stage 5 on dialysis due to drug induced diabetes mellitus
- Chronic kidney disease stage 5 on dialysis due to type 1 diabetes mellitus
- Chronic kidney disease stage 5 on dialysis due to type 2 diabetes mellitus
- Complication of hemodialysis
- Dependence on continuous ambulatory peritoneal dialysis
- Dependence on continuous ambulatory peritoneal dialysis due to end stage renal disease
- Dependence on continuous cycling peritoneal dialysis
- Dependence on dialysis due to end stage renal disease
- Dependence on energy-dependent medical equipment and/or device
- Dependence on hemodialysis
- Dependence on hemodialysis due to end stage renal disease
- Dependence on peritoneal dialysis
- Dependence on peritoneal dialysis due to end stage renal disease
- Dependence on prolonged intermittent renal replacement therapy due to renal failure
- Dependence on renal dialysis
- Dialysis catheter in situ
- Dialysis disequilibrium syndrome
- Disorder of kidney due to drug induced diabetes mellitus
- Hemodialysis procedure done
- Hyperparathyroidism due to end stage renal disease on dialysis
- Hyperparathyroidism due to renal insufficiency
- Hypertension in chronic kidney disease due to type 1 diabetes mellitus
- Hypertension in chronic kidney disease due to type 2 diabetes mellitus
- Hypertension in chronic kidney disease stage 5 due to type 1 diabetes mellitus
- Hypertension in chronic kidney disease stage 5 due to type 2 diabetes mellitus
- Hypertension in chronic kidney disease stage 5 on dialysis
- Hypertension in chronic kidney disease stage 5 on dialysis due to type 1 diabetes mellitus
- Hypertension in chronic kidney disease stage 5 on dialysis due to type 2 diabetes mellitus
- Hypertensive heart AND chronic kidney disease on dialysis
- Inadequate flow to support prescribed dialysis blood flow
- Indwelling peritoneal catheter in situ
- Indwelling peritoneal catheter present
- Injection given
- Malignant hypertensive chronic kidney disease
- Malignant hypertensive chronic kidney disease stage 5
- Malignant hypertensive chronic kidney disease stage 5 on dialysis
- Nephropathy due to secondary diabetes mellitus
- Peritoneal dialysis catheter in situ
- Renal dialysis done
- Secondary hyperparathyroidism
- Temporary peritoneal dialysis catheter in situ
- Tunneled central hemodialysis catheter in situ
- Uremic secondary hyperparathyroidism
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to Z99.2: its own notes plus those printed at block Z77-Z99 and Chapter 21. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Hemodialysis status
- Peritoneal dialysis status
- Presence of arteriovenous shunt for dialysis
- Renal dialysis status NOS
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- encounter for fitting and adjustment of dialysis catheter (Z49.0-)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- noncompliance with renal dialysis (Z91.15-)
Code Also
A second code may be needed to fully describe the condition; the note gives no sequencing direction.
Notes
General instructions on how these codes are used.
- Z codes represent reasons for encounters. A corresponding procedure code must accompany a Z code if a procedure is performed. Categories Z00-Z99 are provided for occasions when circumstances other than a disease, injury or external cause classifiable to categories A00-Y89 are recorded as 'diagnoses' or 'problems'. This can arise in two main ways:
- (a) When a person who may or may not be sick encounters the health services for some specific purpose, such as to receive limited care or service for a current condition, to donate an organ or tissue, to receive prophylactic vaccination (immunization), or to discuss a problem which is in itself not a disease or injury.
- (b) When some circumstance or problem is present which influences the person's health status but is not in itself a current illness or injury.
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name Z99.2, its category, or a range that includes it.
Excludes1 1
These codes carry an Excludes1 note naming Z99.2: they are not reported together with it, unless the two conditions are unrelated.
- I77.0 Arteriovenous fistula, acquiredpresence of arteriovenous shunt (fistula) for dialysis (Z99.2)
Excludes2 1
These codes carry an Excludes2 note naming Z99.2: its condition is not part of those codes, and both may be reported when the patient has both.
Use Additional Code 1
These codes say to use an additional code from the note, and Z99.2 is one of the codes named.
- N18.6 End stage renal diseasecode to identify dialysis status (Z99.2)
Index to Diseases and InjuriesGuidance
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Dialysis
When your kidneys are healthy, they clean your blood. They also make hormones that keep your bones strong and your blood healthy. When your kidneys fail, you need treatment to replace the work your kidneys used to do. Unless you have a kidney transplant, you will need a treatment called dialysis.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert Z99.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Z99.2Overview
What is the ICD-10 code for dependence on renal dialysis?
The ICD-10-CM code for dependence on renal dialysis is Z99.2 (sometimes written as Z992). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is Z99.2 a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report dependence on renal dialysis on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does Z99.2 group to?
On inpatient claims, dependence on renal dialysis maps to MS-DRG 951 (other Factors Influencing Health Status), which carries a relative weight of 0.5574. Higher weights mean higher Medicare reimbursement.
Can Z99.2 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because dependence on renal dialysis describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z99.2 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for dependence on renal dialysis on inpatient claims. The code appears in the Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99) range of the CMS exempt list.
Does Z99.2 risk-adjust for Medicare Advantage payment?
Not for Medicare Advantage. Z99.2 mapped to HCC 134 in the retired CMS-HCC V24 model, which last determined payment in 2025, but it maps to no category in the live V28 model; see all codes that no longer risk-adjust. It still risk-adjusts in the PACE (CMS-HCC V22) category 134 (Dialysis Status), ESRD (V21) category 134 (Dialysis Status), ESRD (V24) category 134 (Dialysis Status), and RxHCC Part D (V08) category 261 (Dialysis Status, Including End Stage Renal Disease).
