C49 Malignant neoplasm of other connective and soft tissue

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Malignant neoplasm of other connective and soft tissue is C49 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
C45-C49: Malignant neoplasms of mesothelial and soft tissue (C45-C49)
Category C49
24 codes (20 billable)
FY2026 Status
Stable since FY2024
Includes
  • malignant neoplasm of blood vessel
  • malignant neoplasm of bursa
  • malignant neoplasm of cartilage
  • malignant neoplasm of fascia
  • malignant neoplasm of fat
  • malignant neoplasm of ligament, except uterine
  • malignant neoplasm of lymphatic vessel
  • malignant neoplasm of muscle
  • malignant neoplasm of synovia
  • malignant neoplasm of tendon (sheath)
Excludes1
Not coded here. These conditions should NOT be coded together with C49.
  • malignant neoplasm of cartilage (of):
  • articular (C40-C41)
  • larynx (C32.3)
  • nose (C30.0)
  • malignant neoplasm of connective tissue of breast (C50.-)
Excludes2
Not included here. These conditions are coded elsewhere but may be coded together if applicable.
  • Kaposi's sarcoma of soft tissue (C46.1)
  • malignant neoplasm of heart (C38.0)
  • malignant neoplasm of peripheral nerves and autonomic nervous system (C47.-)
  • malignant neoplasm of peritoneum (C48.2)
  • malignant neoplasm of retroperitoneum (C48.0)
  • malignant neoplasm of uterine ligament (C57.3)
  • mesothelioma (C45.-)

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.a
Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.2.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

More Specific Codes

C49.0 Malignant neoplasm of connective and soft tissue of head, face and neck C49.1 Malignant neoplasm of connective and soft tissue of upper limb, including shoulder C49.10 Malignant neoplasm of connective and soft tissue of unspecified upper limb, including shoulder C49.11 Malignant neoplasm of connective and soft tissue of right upper limb, including shoulder C49.12 Malignant neoplasm of connective and soft tissue of left upper limb, including shoulder C49.2 Malignant neoplasm of connective and soft tissue of lower limb, including hip C49.20 Malignant neoplasm of connective and soft tissue of unspecified lower limb, including hip C49.21 Malignant neoplasm of connective and soft tissue of right lower limb, including hip C49.22 Malignant neoplasm of connective and soft tissue of left lower limb, including hip C49.3 Malignant neoplasm of connective and soft tissue of thorax C49.4 Malignant neoplasm of connective and soft tissue of abdomen C49.5 Malignant neoplasm of connective and soft tissue of pelvis C49.6 Malignant neoplasm of connective and soft tissue of trunk, unspecified C49.8 Malignant neoplasm of overlapping sites of connective and soft tissue C49.9 Malignant neoplasm of connective and soft tissue, unspecified C49.A Gastrointestinal stromal tumor C49.A0 Gastrointestinal stromal tumor, unspecified site C49.A1 Gastrointestinal stromal tumor of esophagus C49.A2 Gastrointestinal stromal tumor of stomach C49.A3 Gastrointestinal stromal tumor of small intestine C49.A4 Gastrointestinal stromal tumor of large intestine C49.A5 Gastrointestinal stromal tumor of rectum C49.A9 Gastrointestinal stromal tumor of other sites

Related Codes in C49

C49.0 Malignant neoplasm of connective and soft tissue of head, face and neck C49.1 Malignant neoplasm of connective and soft tissue of upper limb, including shoulder C49.10 Malignant neoplasm of connective and soft tissue of unspecified upper limb, including shoulder C49.11 Malignant neoplasm of connective and soft tissue of right upper limb, including shoulder C49.12 Malignant neoplasm of connective and soft tissue of left upper limb, including shoulder C49.2 Malignant neoplasm of connective and soft tissue of lower limb, including hip C49.20 Malignant neoplasm of connective and soft tissue of unspecified lower limb, including hip C49.21 Malignant neoplasm of connective and soft tissue of right lower limb, including hip C49.22 Malignant neoplasm of connective and soft tissue of left lower limb, including hip C49.3 Malignant neoplasm of connective and soft tissue of thorax C49.4 Malignant neoplasm of connective and soft tissue of abdomen C49.5 Malignant neoplasm of connective and soft tissue of pelvis C49.6 Malignant neoplasm of connective and soft tissue of trunk, unspecified C49.8 Malignant neoplasm of overlapping sites of connective and soft tissue C49.9 Malignant neoplasm of connective and soft tissue, unspecified C49.A Gastrointestinal stromal tumor C49.A0 Gastrointestinal stromal tumor, unspecified site C49.A1 Gastrointestinal stromal tumor of esophagus C49.A2 Gastrointestinal stromal tumor of stomach C49.A3 Gastrointestinal stromal tumor of small intestine
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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