All ICD10 Codes

Z85.850

Billable
ChapterZ00–Z99
Ranksubcategory
Official Description

Personal history of malignant neoplasm of thyroid

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).
General instructions are available for the parent sections:
View Z77-Z99 NotesView Z85 NotesView Z85.8 NotesView Z85.85 Notes

Clinical Hierarchy

CH21Factors influencing health status and contact with health services (Z00-Z99)
Z77-Z99Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
Z85Personal history of malignant neoplasm
Z85.8Personal history of malignant neoplasms of other organs and systems
Z85.85Personal history of malignant neoplasm of endocrine glands
Z85.850Personal history of malignant neoplasm of thyroid

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Z85.850:

subcategoryZ85.85
Personal history of malignant neoplasm of endocrine glands
View context instructions
subcategoryZ85.8
Personal history of malignant neoplasms of other organs and systems
View context instructions
categoryZ85
Personal history of malignant neoplasm
View context instructions
blockZ77-Z99
Persons with potential health hazards related to family and personal history and certain conditions influencing health status (Z77-Z99)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to Z85.850. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

1 raw paths
History1 unique routes
personal (of)
malignant neoplasm (of)
thyroid→Z85.850

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 826
Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with MCC
DRG 827
Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with CC
DRG 828
Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures without CC/MCC
DRG 829
Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures with CC/MCC
DRG 830
Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Other Procedures without CC/MCC
DRG 843
Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with MCC
DRG 844
Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses with CC
DRG 845
Other Myeloproliferative Disorders or Poorly Differentiated Neoplastic Diagnoses without CC/MCC

Cross Reference

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