C40.20
✓ Billable
Malignant neoplasm of long bones of unspecified lower limb
ICD-10-CM · FY2026 · Neoplasms
Code
C40.20
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Neoplasms
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code C40.20?
ICD-10-CM code C40.20 represents Malignant neoplasm of long bones of unspecified lower limb. It is a billable diagnosis code in the Neoplasms chapter, effective October 1, 2025 – September 30, 2026.
Is C40.20 billable?
Yes. C40.20 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is C40.20 in?
C40.20 belongs to the Neoplasms chapter (C00–D49) of ICD-10-CM.
Related codes in the C40 category
C40
Malignant neoplasm of bone and articular cartilage of limbs
Non-billable
C40.0
Malignant neoplasm of scapula and long bones of upper limb
Non-billable
C40.1
Malignant neoplasm of short bones of upper limb
Non-billable
C40.2
Malignant neoplasm of long bones of lower limb
Non-billable
C40.3
Malignant neoplasm of short bones of lower limb
Non-billable
C40.8
Malignant neoplasm of overlapping sites of bone and articular cartilage of limb
Non-billable
C40.9
Malignant neoplasm of unspecified bones and articular cartilage of limb
Non-billable
C40.00
Malignant neoplasm of scapula and long bones of unspecified upper limb
Billable
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