Other disorders of skin and subcutaneous tissue, not elsewhere classified (L98) ICD-10-CM

The vessels carrying blood away from the heart.

Abnormal communication between two ARTERIES that may result from injury or occur as a congenital abnormality.

An abnormal direct communication between an artery and a vein without passing through the CAPILLARIES. An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. The locations and size of the shunts determine the degree of effects on the cardiovascular functions such as BLOOD PRESSURE and HEART RATE.

Abnormal passage in any organ of the biliary tract or between biliary organs and other organs.

An abnormal passage or communication between a bronchus and another part of the body.

An acquired or spontaneous abnormality in which there is communication between CAVERNOUS SINUS, a venous structure, and the CAROTID ARTERIES. It is often associated with HEAD TRAUMA, specifically basilar skull fractures (SKULL FRACTURE, BASILAR). Clinical signs often include VISION DISORDERS and INTRACRANIAL HYPERTENSION.

A plant genus of the family FABACEAE. Many species of this genus, including the medicinal C. senna and C. angustifolia, have been reclassified into the Senna genus (SENNA PLANT) and some to CHAMAECRISTA.

An abnormal passage or communication leading from an internal organ to the surface of the body.

An abnormal passage in the oral cavity on the gingiva.

An abnormal passage communicating between any components of the digestive system, or between any part of the digestive system and surrounding organ(s).

Abnormal passage communicating with the ESOPHAGUS. The most common type is TRACHEOESOPHAGEAL FISTULA between the esophagus and the TRACHEA.

Abnormal communication most commonly seen between two internal organs, or between an internal organ and the surface of the body.

Abnormal passage communicating with the STOMACH.

Autosomal recessive disorder characterized by HYALINE deposition in the skin, bone, gastrointestinal tract, muscles and glands; multiple subcutaneous skin nodules; GINGIVAL HYPERTROPHY; and joint CONTRACTURES. Mutations in the capillary morphogenesis protein-2 are associated with the disorder.

An abnormal anatomical passage between the INTESTINE, and another segment of the intestine or other organs. External intestinal fistula is connected to the SKIN (enterocutaneous fistula). Internal intestinal fistula can be connected to a number of organs, such as STOMACH (gastrocolic fistula), the BILIARY TRACT (cholecystoduodenal fistula), or the URINARY BLADDER of the URINARY TRACT (colovesical fistula). Risk factors include inflammatory processes, cancer, radiation treatment, and surgical misadventures (MEDICAL ERRORS).

A cutaneous necrobiotic disorder characterized by firm, yellow plaques or nodules, often in a periorbital distribution. It is often accompanied by an elevated ERYTHROCYTE SEDIMENTATION RATE; LEUKOPENIA; and MONOCLONAL GAMMOPATHY (IgG-kappa type) and systemic involvement.

An abnormal passage within the mouth communicating between two or more anatomical structures.

A fistula between the maxillary sinus and the oral cavity.

A nodular organ in the ABDOMEN that contains a mixture of ENDOCRINE GLANDS and EXOCRINE GLANDS. The small endocrine portion consists of the ISLETS OF LANGERHANS secreting a number of hormones into the blood stream. The large exocrine portion (EXOCRINE PANCREAS) is a compound acinar gland that secretes several digestive enzymes into the pancreatic ductal system that empties into the DUODENUM.

Abnormal passage communicating with the PANCREAS.

Surgical portasystemic shunt between the portal vein and inferior vena cava.

An inherited disorder of connective tissue with extensive degeneration and calcification of ELASTIC TISSUE primarily in the skin, eye, and vasculature. At least two forms exist, autosomal recessive and autosomal dominant. This disorder is caused by mutations of one of the ATP-BINDING CASSETTE TRANSPORTERS. Patients are predisposed to MYOCARDIAL INFARCTION and GASTROINTESTINAL HEMORRHAGE.

An abnormal anatomical passage connecting the RECTUM to the outside, with an orifice at the site of drainage.

An abnormal anatomical passage between the RECTUM and the VAGINA.

The distal segment of the LARGE INTESTINE, between the SIGMOID COLON and the ANAL CANAL.

An abnormal passage communicating between any component of the respiratory tract or between any part of the respiratory system and surrounding organs.

A fistula between a salivary duct or gland and the cutaneous surface of the oral cavity.

A connective tissue disorder characterized by widespread thickening of SKIN with a cobblestone-like appearance. It is caused by proliferation of FIBROBLASTS and deposition of MUCIN in the DERMIS in the absence of thyroid disease. Most scleromyxedema cases are associated with a MONOCLONAL GAMMOPATHY, immunoglobulin IgG-lambda.

An ULCER of the skin and underlying tissues.

An organ of digestion situated in the left upper quadrant of the abdomen between the termination of the ESOPHAGUS and the beginning of the DUODENUM.

Abnormal passage between the ESOPHAGUS and the TRACHEA, acquired or congenital, often associated with ESOPHAGEAL ATRESIA.

A lesion on the surface of the skin or a mucous surface, produced by the sloughing of inflammatory necrotic tissue.

A musculomembranous sac along the URINARY TRACT. URINE flows from the KIDNEYS into the bladder via the ureters (URETER), and is held there until URINATION.

An abnormal passage in the URINARY BLADDER or between the bladder and any surrounding organ.

An abnormal passage in any part of the URINARY TRACT between itself or with other organs.

The duct which coveys URINE from the pelvis of the KIDNEY through the URETERS, BLADDER, and URETHRA.

An abnormal anatomical passage that connects the VAGINA to other organs, such as the bladder (VESICOVAGINAL FISTULA) or the rectum (RECTOVAGINAL FISTULA).

An abnormal passage between two or more BLOOD VESSELS, between ARTERIES; VEINS; or between an artery and a vein.

An abnormal anatomical passage between the URINARY BLADDER and the VAGINA.

Of the 168 codes in this range, 145 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.

The range classifies other disorders of skin and subcutaneous tissue, not elsewhere classified. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.