2026 ICD-10-CM Diagnosis Code Z86.006Personal history of melanoma in-situ
Z86.006 is a billable ICD-10-CM diagnosis code for personal history of melanoma in-situ. 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. 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 Z86.006.
Present on Admission (POA)Billing
Z86.006 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Conditions classifiable to D03
Type 2 Excludes
- sites other than skin - code to personal history of in-situ neoplasm of the site
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.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- History
- personal (of) - See Also: History, family (of);
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- History
- personal (of)
- in situ neoplasm
- melanoma
- History
- personal (of)
- melanoma
- in situ
- History
- personal (of)
- neoplasm
- in situ
- melanoma
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Melanoma
Melanoma is the most serious type of skin cancer. Often the first sign of melanoma is a change in the size, shape, color, or feel of a mole. Most melanomas have a black or black-blue area. Melanoma may also appear as a new mole. It may be black, abnormal, or "ugly looking."
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Code History & ChangesHistory
Replacement Z86.006 replaces the following previously assigned code(s):
- Z86.008 - Personal history of in-situ neoplasm of other site
Questions About Z86.006Overview
Is Z86.006 (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 melanoma in-situ on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Can Z86.006 be a principal diagnosis?
No. The Medicare Code Editor rejects this code as a principal diagnosis because personal history of melanoma in-situ describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.
Is Z86.006 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 melanoma in-situ on inpatient claims.
