D40.1 – Neoplasm of uncertain behavior of testis

ICD-10-CM 2027 diagnosis code · Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes

Non-billable header

ICD-10-CM code D40.1

Code: D40.1 (claims format: D401)
Description: Neoplasm of uncertain behavior of testis
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: D37-D48 Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes
Parent codes: D40

Billable codes under D40.1

D40.1 is a header code and cannot be used on claims. Choose the most specific code:

Notes inherited from parent codes

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

Block D37-D48

Excludes1 (not coded here):

neoplasms of unspecified behavior (D49.-)

Notes:

Categories D37-D44, and D48 classify by site neoplasms of uncertain behavior, i.e., histologic confirmation whether the neoplasm is malignant or benign cannot be made.

Index terms for D40.1

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

Related codes in D40

Frequently asked questions

What is ICD-10 code D40.1?

D40.1 is the ICD-10-CM code for neoplasm of uncertain behavior of testis, in the block D37-D48 (Neoplasms of uncertain behavior, polycythemia vera and myelodysplastic syndromes).

Is D40.1 a billable code?

No. D40.1 is a header code with more specific child codes; report one of the billable codes listed above.

What category does D40.1 belong to?

It belongs to category D40 – Neoplasm of uncertain behavior of male genital 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.