FY2027 ICD-10-CM reference
I12.0: Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
By the HCC Buddy Coding Team
The official ICD-10-CM descriptor is Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Billable code. Verified against the official FY2027 order file.
CMS-HCC V28
- HCC 326: Chronic Kidney Disease, Stage 5 · RAF 0.815, Community Non-Dual Aged (CNA)
Payment year 2027, 2026 dates of service. HCC from the CMS 2027 Initial ICD-10-CM Mappings; RAF from the CMS-HCC V28 relative factors. For 2027 dates of service, CMS has not yet published the payment year 2028 mappings.
CMS-HCC V24
Not used for payment year 2027 Medicare Advantage payment
ESRD
- HCC 136: Chronic Kidney Disease/Stage 5
Coefficient pending: payment year 2027 coefficients for this model are not yet verified, so no RAF is shown. Mapping: PY2026 CMS mapping; CMS 2027 initial file unchanged.
PACE
Source verification pending
RxHCC
- HCC 187: Hypertension
- HCC 262: Chronic Kidney Disease Stage 5
Coefficient pending: payment year 2027 coefficients for this model are not yet verified, so no RAF is shown. Mapping: PY2026 CMS mapping; CMS 2027 initial file unchanged.
HHS-HCC
- HCC 187: Chronic Kidney Disease, Stage 5
RAF not applicable: HHS-HCC weights vary by metal level. Mapping: HHS-HCC 2026 benefit year.
FY2027 Tabular instructions
Instructions below include applicable chapter, section and parent-code notes. Each note identifies where it appears in the official source.
Excludes2
certain conditions originating in the perinatal period (P04-P96)
Source: I00-I99 (chapter, inherited).
Excludes2
certain infectious and parasitic diseases (A00-B99)
Source: I00-I99 (chapter, inherited).
Excludes2
complications of pregnancy, childbirth and the puerperium (O00-O9A)
Source: I00-I99 (chapter, inherited).
Excludes2
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
Source: I00-I99 (chapter, inherited).
Excludes2
endocrine, nutritional and metabolic diseases (E00-E88)
Source: I00-I99 (chapter, inherited).
Excludes2
injury, poisoning and certain other consequences of external causes (S00-T88)
Source: I00-I99 (chapter, inherited).
Excludes2
neoplasms (C00-D49)
Source: I00-I99 (chapter, inherited).
Excludes2
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Source: I00-I99 (chapter, inherited).
Excludes2
systemic connective tissue disorders (M30-M36)
Source: I00-I99 (chapter, inherited).
Excludes2
transient cerebral ischemic attacks and related syndromes (G45.-)
Source: I00-I99 (chapter, inherited).
Instructional note
code to identify:
Source: I10-I1A (section, inherited).
Instructional note
exposure to environmental tobacco smoke (Z77.22)
Source: I10-I1A (section, inherited).
Instructional note
history of tobacco dependence (Z87.891)
Source: I10-I1A (section, inherited).
Instructional note
occupational exposure to environmental tobacco smoke (Z57.31)
Source: I10-I1A (section, inherited).
Instructional note
tobacco dependence (F17.-)
Source: I10-I1A (section, inherited).
Instructional note
tobacco use (Z72.0)
Source: I10-I1A (section, inherited).
Excludes1
neonatal hypertension (P29.2)
Source: I10-I1A (section, inherited).
Excludes1
primary pulmonary hypertension (I27.0)
Source: I10-I1A (section, inherited).
Excludes2
hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Source: I10-I1A (section, inherited).
Includes
any condition in N18 and N26 - due to hypertension
Source: I12 (category, inherited).
Includes
arteriosclerosis of kidney
Source: I12 (category, inherited).
Includes
arteriosclerotic nephritis (chronic) (interstitial)
Source: I12 (category, inherited).
Includes
hypertensive nephropathy
Source: I12 (category, inherited).
Includes
nephrosclerosis
Source: I12 (category, inherited).
Excludes1
hypertension due to kidney disease (I15.0, I15.1)
Source: I12 (category, inherited).
Excludes1
renovascular hypertension (I15.0)
Source: I12 (category, inherited).
Excludes1
secondary hypertension (I15.-)
Source: I12 (category, inherited).
Excludes2
acute kidney failure (N17.-)
Source: I12 (category, inherited).
Instructional note
code to identify the stage of chronic kidney disease (N18.5, N18.6)
Source: I12.0 (self, direct).
Compare the FY2027 additions, removals and billable-status changes
What does I12.0 mean in FY2027?
The official ICD-10-CM descriptor is Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease. The FY2027 annual edition starts October 1, 2026. Check the edition that applies to the encounter or inpatient discharge, including any April update.
Is I12.0 billable in FY2027?
The FY2027 order file marks I12.0 as billable. Check the complete Tabular instructions and documentation before assigning it.
Does I12.0 map to an HCC?
In the CMS 2027 Initial ICD-10-CM Mappings (payment year 2027, 2026 dates of service), I12.0 maps to CMS-HCC V28 HCC 326 (Chronic Kidney Disease, Stage 5). For 2027 dates of service, CMS has not yet published the payment year 2028 mappings. Under the PY2026 CMS mapping; CMS 2027 initial file unchanged: ESRD HCC 136; RxHCC HCC 187 and HCC 262. Coefficients for these models are pending verification for payment year 2027. HHS-HCC: HCC 187 under the HHS-HCC 2026 benefit year mapping (no RAF; HHS-HCC weights vary by metal level). CMS-HCC V24: not used for payment year 2027 Medicare Advantage payment (CMS CY 2027 Rate Announcement). The PACE mapping is still pending verification for FY2027.
Source: CMS FY2027 ICD-10-CM order file. Payment model: CMS CY 2027 Rate Announcement. Read the FY2027 Official Guidelines.
Review the FY2026 April edition