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D09.3 vs Z85.238

D09.3 (Carcinoma in situ of thyroid and other endocrine glands) compared with Z85.238 (Personal history of other malignant neoplasm of thymus), from the official CMS tabular data. Z85.238 is the personal-history/screening code for the active disease D09.3 names. MedCoder-derived

Relationship

Review

Condition lifecycle relationship

Z85.238
Personal history of other malignant neoplasm of thymus
↔
D09.3
Carcinoma in situ of thyroid and other endocrine glands

Personal-history or screening code versus the active disease.

In-situ disease for this site (thymus)

A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code for the same site.

Source: CMS Table of Neoplasms (site match derived from the code title)

Can these codes be reported together?

History or screening versus active disease. Z85.238 is the personal-history or screening code for the active disease D09.3 names.

Site match derived from the code’s own title against the CMS/CDC Table of Neoplasms. A personal-history code describes a condition that no longer exists and is no longer being treated, so it is not interchangeable with the active-disease code.

Side by side

D09.3Carcinoma in situ of thyroid and other endocrine glandsZ85.238Personal history of other malignant neoplasm of thymus
Billing statusBillableBillable
ClassificationC00-D49 — NeoplasmsZ00-Z99 — Factors influencing health status and contact with health services
DefinitionCarcinoma in situ of thyroid and other endocrine glands is a billable ICD-10-CM diagnosis code (D09.3).Personal history of other malignant neoplasm of thymus is a billable ICD-10-CM diagnosis code (Z85.238).
Includes
Bowen's disease
erythroplasia
grade III intraepithelial neoplasia
Queyrat's erythroplasia
Conditions classifiable to C37
Use additional code—
code to identify:
alcohol use and dependence (F10.-)
exposure to environmental tobacco smoke (Z77.22)
Code first—
any follow-up examination after treatment of malignant neoplasm (Z08)
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources