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FY2027 ICD-10-CM reference

E10.22: Type 1 diabetes mellitus with diabetic chronic kidney disease

By the HCC Buddy Coding Team

The official ICD-10-CM descriptor is Type 1 diabetes mellitus with diabetic chronic kidney 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 37: Diabetes with Chronic Complications · RAF 0.166, 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 18: Diabetes with Chronic Complications

CMS lists the same category for every age band in its model mapping

No RAF is shown: it depends on the member. Mapping: PY2026 CMS mapping; CMS 2027 initial file unchanged.

PACE

Source verification pending

RxHCC

HCC 30: Diabetes with Complications

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 20: HHS-HCC 20
HCC 22: HHS-HCC 22

HCC 20: applies to all members
HCC 22: This code has a CMS age requirement: applies when age >= 21

No RAF is shown: it depends on the member. 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.

Instructional note

All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.

Source: E00-E89 (chapter, inherited).

Excludes1

transitory endocrine and metabolic disorders specific to newborn (P70-P74)

Source: E00-E89 (chapter, inherited).

Includes

brittle diabetes (mellitus)

Source: E10 (category, inherited).

Includes

diabetes (mellitus) due to autoimmune process

Source: E10 (category, inherited).

Includes

diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction

Source: E10 (category, inherited).

Includes

idiopathic diabetes (mellitus)

Source: E10 (category, inherited).

Includes

juvenile onset diabetes (mellitus)

Source: E10 (category, inherited).

Includes

ketosis-prone diabetes (mellitus)

Source: E10 (category, inherited).

Excludes1

diabetes mellitus due to underlying condition (E08.-)

Source: E10 (category, inherited).

Excludes1

drug or chemical induced diabetes mellitus (E09.-)

Source: E10 (category, inherited).

Excludes1

gestational diabetes (O24.4-)

Source: E10 (category, inherited).

Excludes1

hyperglycemia NOS (R73.9)

Source: E10 (category, inherited).

Excludes1

neonatal diabetes mellitus (P70.2)

Source: E10 (category, inherited).

Excludes1

postpancreatectomy diabetes mellitus (E13.-)

Source: E10 (category, inherited).

Excludes1

postprocedural diabetes mellitus (E13.-)

Source: E10 (category, inherited).

Excludes1

secondary diabetes mellitus NEC (E13.-)

Source: E10 (category, inherited).

Excludes1

type 2 diabetes mellitus (E11.-)

Source: E10 (category, inherited).

Instructional note

code to identify stage of chronic kidney disease (N18.1-N18.6)

Source: E10.22 (self, direct).

Source: CMS FY2027 Tabular List and Alphabetic Index.

Open Tabular instructions and code details

Compare the FY2027 additions, removals and billable-status changes

What does E10.22 mean in FY2027?

The official ICD-10-CM descriptor is Type 1 diabetes mellitus with diabetic chronic kidney 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 E10.22 billable in FY2027?

The FY2027 order file marks E10.22 as billable. Check the complete Tabular instructions and documentation before assigning it.

Does E10.22 map to an HCC?

In the CMS 2027 Initial ICD-10-CM Mappings (payment year 2027, 2026 dates of service), E10.22 maps to CMS-HCC V28 HCC 37 (Diabetes with Chronic Complications). 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 18 (CMS lists the same category for every age band in its model mapping); RxHCC HCC 30. Coefficients for these models are pending verification for payment year 2027. HHS-HCC: HCC 20 and HCC 22 (HCC 20: applies to all members; HCC 22: This code has a CMS age requirement: applies when age >= 21) 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