D00.08 is not a CMS-HCC payment code. MEAT criteria · RAF Calculator · free HCC coding tools

ICD-10-CM Code View

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Code lookupD00.08

Effective periodFY2026 Apr Update (Apr 1-Sep 30)

FY 2026 Apr update / Neoplasms (C00-D49) / In situ neoplasms (D00-D09)

D00.08

Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidance

Carcinoma in situ of pharynx

Abnormal cells in the pharynx (throat) that have the potential to become cancer but are not yet invasive.

Overview Risk Models Code Book Documentation Audit Notes Edition comparison

CMS-HCC V28

N/A

—

Not risk-adjusted for this model/period.

Not mapped

CMS-HCC V24

Historical

Not used for standard CY2026 Medicare Advantage payment. Select a historical period to review V24.

Not used for CY2026 payment

ACA/HHS

N/A

—

Not risk-adjusted for this model/period.

Not mapped

ESRD/PACE

N/A

—

Not risk-adjusted for this model/period.

Not mapped

RXHCC

N/A

—

Not risk-adjusted for this model/period.

Not mapped

Code Book Path

Official

D00Carcinoma in situ of oral cavity, esophagus and stomach D00.0Carcinoma in situ of lip, oral cavity and pharynx D00.08Carcinoma in situ of pharynx

Inclusion Terms

Official

Carcinoma in situ of aryepiglottic fold NOS
Carcinoma in situ of hypopharyngeal aspect of aryepiglottic fold
Carcinoma in situ of marginal zone of aryepiglottic fold

Excludes 2

Official

No Excludes 2 notes are included in this display for D00.08. Check the code and parent instructions in the Code Book.

Related Codes

Official

D00.00Carcinoma in situ of oral cavity, unspecified site D00.01Carcinoma in situ of labial mucosa and vermilion border D00.02Carcinoma in situ of buccal mucosa D00.03Carcinoma in situ of gingiva and edentulous alveolar ridge D00.04Carcinoma in situ of soft palate

Includes

Official

Bowen's diseaseInherited from D00-D09
erythroplasiaInherited from D00-D09
grade III intraepithelial neoplasiaInherited from D00-D09
Queyrat's erythroplasiaInherited from D00-D09

Excludes 1

Official

melanoma in situ (D03.-)Inherited from D00, D00.0
carcinoma in situ of aryepiglottic fold or interarytenoid fold, laryngeal aspect (D02.0)Inherited from D00, D00.0
carcinoma in situ of epiglottis NOS (D02.0)Inherited from D00, D00.0
carcinoma in situ of epiglottis suprahyoid portion (D02.0)Inherited from D00, D00.0
carcinoma in situ of skin of lip (D03.0, D04.0)Inherited from D00, D00.0

Code First

Official

No Code First sequencing instructions are included in this display for D00.08. Check the code and parent instructions in the Code Book.

Use Additional

Official

code to identify:Inherited from D00.0
exposure to environmental tobacco smoke (Z77.22)Inherited from D00.0
exposure to tobacco smoke in the perinatal period (P96.81)Inherited from D00.0
history of tobacco dependence (Z87.891)Inherited from D00.0
occupational exposure to environmental tobacco smoke (Z57.31)Inherited from D00.0
tobacco dependence (F17.-)Inherited from D00.0
tobacco use (Z72.0)Inherited from D00.0

Code Also

Official

No Code Also instructions are included in this display for D00.08. Check the code and parent instructions in the Code Book.

Buddy Documentation Tip

HCC Buddy guidance

The pharynx includes the nasopharynx, oropharynx, and laryngopharynx

Clarify the specific pharyngeal region if documented to ensure this is the appropriate code

Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →

Is D00.08 an HCC code?

No. D00.08 is a billable ICD-10-CM code with no mapping under the current CMS-HCC V28 community payment model, and none under the ESRD, Part D RxHCC, or HHS-HCC models.

Code: D00.08
Description: Carcinoma in situ of pharynx
HCC (V28): No CMS-HCC V28 mapping
RAF reference coefficient: —
Billable: Yes
Payment year: 2026

Coder workflow notes

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What This Code Means

D00.08 is the ICD-10-CM diagnosis code for carcinoma in situ of pharynx. Abnormal cells in the pharynx (throat) that have the potential to become cancer but are not yet invasive. D00.08 sits in the ICD-10-CM chapter for neoplasms (c00-d49), within the section covering in situ neoplasms (d00-d09).

D00.08 is a billable ICD-10-CM code, but no current CMS-HCC V28 community payment mapping is shown, and none under the ESRD, Part D RxHCC, or HHS-HCC models. Do not assign risk adjustment value from this page when no source-backed mapping is shown; verify the applicable model and payment year.

The pharynx includes the nasopharynx, oropharynx, and laryngopharynx.

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for D00.08 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

•The pharynx includes the nasopharynx, oropharynx, and laryngopharynx
•Clarify the specific pharyngeal region if documented to ensure this is the appropriate code