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Neoplasm Table

connective tissue NEC

SiteMalignant primaryMalignant secondaryCa in situBenignUncertain behaviorUnspecified behavior
connective tissue NECC49.9C79.89—D21.9D48.1-D49.2
Note: For neoplasms of connective tissue (blood vessel, bursa, fascia, ligament, muscle, peripheral nerves, sympathetic and parasympathetic nerves and ganglia, synovia, tendon, etc.) or of morphological types that indicate connective tissue, code according to the list under "Neoplasm, connective tissue". For sites that do not appear in this list, code to neoplasm of that site; e.g., fibrosarcoma, pancreas (C25.9)——————
Note: Morphological types that indicate connective tissue appear in their proper place in the alphabetic index with the instruction "see Neoplasm, connective tissue ...."——————
abdomenC49.4C79.89—D21.4D48.1-D49.2
abdominal wallC49.4C79.89—D21.4D48.1-D49.2
ankleC49.2-C79.89—D21.2-D48.1-D49.2
antecubital fossa or spaceC49.1-C79.89—D21.1-D48.1-D49.2
armC49.1-C79.89—D21.1-D48.1-D49.2
auricle (ear)C49.0C79.89—D21.0D48.1-D49.2
axillaC49.3C79.89—D21.3D48.1-D49.2
backC49.6C79.89—D21.6D48.1-D49.2
breast — see Neoplasm, breast——————
buttockC49.5C79.89—D21.5D48.1-D49.2
calfC49.2-C79.89—D21.2-D48.1-D49.2
cervical regionC49.0C79.89—D21.0D48.1-D49.2
cheekC49.0C79.89—D21.0D48.1-D49.2
chest (wall)C49.3C79.89—D21.3D48.1-D49.2
chinC49.0C79.89—D21.0D48.1-D49.2
diaphragmC49.3C79.89—D21.3D48.1-D49.2
ear (external)C49.0C79.89—D21.0D48.1-D49.2
elbowC49.1-C79.89—D21.1-D48.1-D49.2
extrarectalC49.5C79.89—D21.5D48.1-D49.2
extremityC49.9C79.89—D21.9D48.1-D49.2
lowerC49.2-C79.89—D21.2-D48.1-D49.2
upperC49.1-C79.89—D21.1-D48.1-D49.2
eyelidC49.0C79.89—D21.0D48.1-D49.2
faceC49.0C79.89—D21.0D48.1-D49.2
fingerC49.1-C79.89—D21.1-D48.1-D49.2
flankC49.6C79.89—D21.6D48.1-D49.2
footC49.2-C79.89—D21.2-D48.1-D49.2
forearmC49.1-C79.89—D21.1-D48.1-D49.2
foreheadC49.0C79.89—D21.0D48.1-D49.2
gastricC49.4C79.89—D21.4D48.1-D49.2
gastrointestinalC49.4C79.89—D21.4D48.1-D49.2
gluteal regionC49.5C79.89—D21.5D48.1-D49.2
great vessels NECC49.3C79.89—D21.3D48.1-D49.2
groinC49.5C79.89—D21.5D48.1-D49.2
handC49.1-C79.89—D21.1-D48.1-D49.2
headC49.0C79.89—D21.0D48.1-D49.2
heelC49.2-C79.89—D21.2-D48.1-D49.2
hipC49.2-C79.89—D21.2-D48.1-D49.2
hypochondriumC49.4C79.89—D21.4D48.1-D49.2
iliopsoas muscleC49.5C79.89—D21.5D48.1-D49.2
infraclavicular regionC49.3C79.89—D21.3D48.1-D49.2
inguinal (canal) (region)C49.5C79.89—D21.5D48.1-D49.2
intestinalC49.4C79.89—D21.4D48.1-D49.2
intrathoracicC49.3C79.89—D21.3D48.1-D49.2
ischiorectal fossaC49.5C79.89—D21.5D48.1-D49.2
jawC03.9C79.89D00.03D10.39D48.1-D49.0
kneeC49.2-C79.89—D21.2-D48.1-D49.2
legC49.2-C79.89—D21.2-D48.1-D49.2
limb NECC49.9C79.89—D21.9D48.1-D49.2
lowerC49.2-C79.89—D21.2-D48.1-D49.2
upperC49.1-C79.89—D21.1-D48.1-D49.2
natesC49.5C79.89—D21.5D48.1-D49.2
neckC49.0C79.89—D21.0D48.1-D49.2
orbitC69.6-C79.49D09.2-D31.6-D48.1-D49.89
overlapping lesionC49.8—————
pararectalC49.5C79.89—D21.5D48.1-D49.2
para-urethralC49.5C79.89—D21.5D48.1-D49.2
paravaginalC49.5C79.89—D21.5D48.1-D49.2
pelvis (floor)C49.5C79.89—D21.5D48.1-D49.2
pelvo-abdominalC49.8C79.89—D21.6D48.1-D49.2
perineumC49.5C79.89—D21.5D48.1-D49.2
perirectal (tissue)C49.5C79.89—D21.5D48.1-D49.2
periurethral (tissue)C49.5C79.89—D21.5D48.1-D49.2
popliteal fossa or spaceC49.2-C79.89—D21.2-D48.1-D49.2
presacralC49.5C79.89—D21.5D48.1-D49.2
psoas muscleC49.4C79.89—D21.4D48.1-D49.2
pterygoid fossaC49.0C79.89—D21.0D48.1-D49.2
rectovaginal septum or wallC49.5C79.89—D21.5D48.1-D49.2
rectovesicalC49.5C79.89—D21.5D48.1-D49.2
retroperitoneumC48.0C78.6—D20.0D48.3D49.0
sacrococcygeal regionC49.5C79.89—D21.5D48.1-D49.2
scalpC49.0C79.89—D21.0D48.1-D49.2
scapular regionC49.3C79.89—D21.3D48.1-D49.2
shoulderC49.1-C79.89—D21.1-D48.1-D49.2
skin (dermis) NEC — see also Neoplasm, skin, by siteC44.90C79.2D04.9D23.9D48.5D49.2
stomachC49.4C79.89—D21.4D48.1-D49.2
submentalC49.0C79.89—D21.0D48.1-D49.2
supraclavicular regionC49.0C79.89—D21.0D48.1-D49.2
templeC49.0C79.89—D21.0D48.1-D49.2
temporal regionC49.0C79.89—D21.0D48.1-D49.2
thighC49.2-C79.89—D21.2-D48.1-D49.2
thoracic (duct) (wall)C49.3C79.89—D21.3D48.1-D49.2
thoraxC49.3C79.89—D21.3D48.1-D49.2
thumbC49.1-C79.89—D21.1-D48.1-D49.2
toeC49.2-C79.89—D21.2-D48.1-D49.2
trunkC49.6C79.89—D21.6D48.1-D49.2
umbilicusC49.4C79.89—D21.4D48.1-D49.2
vesicorectalC49.5C79.89—D21.5D48.1-D49.2
wristC49.1-C79.89—D21.1-D48.1-D49.2
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.

Frequently asked questions

What are the ICD-10-CM neoplasm codes for connective tissue NEC?

Per the ICD-10-CM Neoplasm Table: malignant primary C49.9; malignant secondary C79.89; benign D21.9; uncertain behavior D48.1-; unspecified behavior D49.2. Always confirm the code, and add the required 7th character where applicable, in the Tabular List.

ICD-10-CM Neoplasm Table maintained by CDC/NCHS (public domain), from the CMS FY2027 release.