C76.1 – Malignant neoplasm of thorax

ICD-10-CM 2027 diagnosis code · Malignant neoplasms of ill-defined, other secondary and unspecified sites

Billable code

ICD-10-CM code C76.1

Code: C76.1 (claims format: C761)
Description: Malignant neoplasm of thorax
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 2. Neoplasms (C00-D49)
Block: C76-C80 Malignant neoplasms of ill-defined, other secondary and unspecified sites
Parent codes: C76

Notes for C76.1

Applicable to:

Intrathoracic malignant neoplasm NOS
Malignant neoplasm of axilla NOS
Thoracic malignant neoplasm NOS

Notes inherited from parent codes

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

C76 – Malignant neoplasm of other and ill-defined sites

Excludes1 (not coded here):

malignant neoplasm of female genitourinary tract NOS (C57.9)
malignant neoplasm of male genitourinary tract NOS (C63.9)
malignant neoplasm of lymphoid, hematopoietic and related tissue (C81-C96)
malignant neoplasm of skin (C44.-)
malignant neoplasm of unspecified site NOS (C80.1)

Related codes in C76

C76.0 – Malignant neoplasm of head, face and neckBillable
C76.2 – Malignant neoplasm of abdomenBillable
C76.3 – Malignant neoplasm of pelvisBillable
C76.4 – Malignant neoplasm of upper limbHeader
C76.5 – Malignant neoplasm of lower limbHeader
C76.8 – Malignant neoplasm of other specified ill-defined sitesBillable

Frequently asked questions

What is ICD-10 code C76.1?

C76.1 is the ICD-10-CM code for malignant neoplasm of thorax, in the block C76-C80 (Malignant neoplasms of ill-defined, other secondary and unspecified sites).

Is C76.1 a billable code?

Yes. C76.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does C76.1 belong to?

It belongs to category C76 – Malignant neoplasm of other and ill-defined sites.

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.