I12.9
Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
I12.9 (also written I129) is a billable ICD-10-CM diagnosis code for hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 2 codes in category I12 (Hypertensive chronic kidney disease). The Alphabetic Index lists it under 2 entries. Its coding notes include a Use additional code instruction, 5 Excludes1 entries and 12 Excludes2 entries.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
The classification presumes hypertension is related to heart and kidney conditions unless the provider documents they are unrelated.
Hypertension with heart disease and CKD goes to I13, not I11 or I12. An N18 code is added as a secondary code to give the CKD stage.
Use additional code
Add the listed code as a secondary code, if known.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (11 notes)
- hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
- 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)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Cardiac and Circulatory clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026Includes
Further defines or gives examples of the content of the category.
Inclusion terms
Conditions classified to this code.
- Hypertensive chronic kidney disease NOS
- Hypertensive renal disease NOS
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 2 entries