2026 ICD-10-CM Diagnosis Code Z86.008Personal history of in-situ neoplasm of other site
Z86.008 is a billable ICD-10-CM diagnosis code for personal history of in-situ neoplasm of other site. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is not accepted as a principal diagnosis by the Medicare Code Editor and exempt from POA reporting. Coders also document this condition as history of melanoma in situ of skin. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Personal history of other disease.
Code Identity
Code Classification
Code EditsBilling
Medicare Code Editor checks that affect claim validity for Z86.008.
Present on Admission (POA)Billing
Z86.008 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- History of melanoma in situ of skin
- History of squamous cell carcinoma in situ
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Conditions classifiable to D09
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- History
- personal (of) - See Also: History, family (of);
- specified NEC - Z86.008
- neoplasm
- in situ
- specified NEC - Z86.008
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- History
- personal (of)
- in situ neoplasm
- specified NEC
- History
- personal (of)
- neoplasm
- in situ
- specified NEC
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
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Read the full article at MedlinePlus
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Convert Z86.008 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About Z86.008Overview
Is Z86.008 (Personal history of in-situ neoplasm) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report personal history of in-situ neoplasm of other site on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Can Z86.008 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of in-situ neoplasm of other site describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z86.008 exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for personal history of in-situ neoplasm of other site on inpatient claims.
What is the ICD-9 equivalent of Z86.008?
Under the General Equivalence Mappings, personal history of in-situ neoplasm of other site converts to ICD-9-CM V13.89 (hx diseases NEC). The mapping is approximate, so confirm the match fits the documentation.
