ICDcodes.org
FY2027

Z85.23 — Personal history of malignant neoplasm of thymus

Not billable

Is Z85.23 billable?

No — Z85.23 is a non-billable header code. Z85.23 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 2 billable codes beneath Z85.23.

Z85.23 at a glance

CodeZ85.23
DescriptionPersonal history of malignant neoplasm of thymus
BillableNo — header code
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Code first — inherited from Z85

The underlying condition below must be sequenced before Z85.23. Z85.23 describes a manifestation and cannot be the principal or first-listed diagnosis.

  • any follow-up examination after treatment of malignant neoplasm (Z08)

Use additional code — inherited from Z85

Report an additional code alongside Z85.23 to fully describe the condition. Z85.23 is sequenced first.

  • code to identify:
  • alcohol use and dependence (F10.-)
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Excludes2 — not included here — inherited from Z85

The conditions below are not part of Z85.23, but a patient may have both at the same time. When documentation supports it, Z85.23 and the excluded code may both be reported.

  • personal history of benign neoplasm (Z86.01-)
  • personal history of carcinoma-in-situ (Z86.00-)

Code also — inherited from Z77-Z99

Two codes may be needed to describe the condition fully. Whether Z85.23 is sequenced first depends on the reason for the encounter.

  • any follow-up examination (Z08-Z09)

What codes fall under Z85.23? (2)

How long has Z85.23 existed?

Z85.23 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

What other codes are in the Z85.2 family? (4)