D75.839 – Thrombocytosis, unspecified

ICD-10-CM 2027 diagnosis code · Other disorders of blood and blood-forming organs

Billable code

ICD-10-CM code D75.839

Code: D75.839 (claims format: D75839)
Description: Thrombocytosis, unspecified
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 3. Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism (D50-D89)
Block: D70-D77 Other disorders of blood and blood-forming organs
Parent codes: D75 › D75.8 › D75.83

Notes for D75.839

Applicable to:

Thrombocythemia NOS
Thrombocytosis NOS

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

D75 – Other and unspecified diseases of blood and blood-forming organs

Excludes2 (not included here):

acute lymphadenitis (L04.-)
chronic lymphadenitis (I88.1)
enlarged lymph nodes (R59.-)
hypergammaglobulinemia NOS (D89.2)
lymphadenitis NOS (I88.9)
mesenteric lymphadenitis (acute) (chronic) (I88.0)

D75.83 – Thrombocytosis

Excludes2 (not included here):

essential thrombocythemia (D47.3)

Index terms for D75.839

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in D75.83

D75.838 – Other thrombocytosisBillable

Frequently asked questions

What is ICD-10 code D75.839?

D75.839 is the ICD-10-CM code for thrombocytosis, unspecified, in the block D70-D77 (Other disorders of blood and blood-forming organs).

Is D75.839 a billable code?

Yes. D75.839 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does D75.839 belong to?

It belongs to category D75 – Other and unspecified diseases of blood and blood-forming organs.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.