ICD-10-CM Tabular Index · Chapter 12 · FY 2027 L98

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

The L98 code range covers other disorders of skin and subcutaneous tissue, not elsewhere classified with 168 ICD-10-CM diagnosis codes. 145 of them are billable and valid for claim submission in fiscal year 2027, and the category headers group them but cannot themselves be billed.

✓ Built from the official CMS FY 2027 datasetEffective Oct 1, 2026 – Sep 30, 2027
168
Diagnosis Codes
145
Billable Codes
L98
Code Range
L80–L99
Parent Section
ICD-10-CM

Codes in the L98 Range 168 codes · 145 billable

168 of 168 shown
  • L98 Other disorders of skin and subcutaneous tissue, not elsewhere classifiedNon-billable
  • L98.0 Pyogenic granuloma
  • L98.1 Factitial dermatitis
  • L98.2 Febrile neutrophilic dermatosis [Sweet]
  • L98.3 Eosinophilic cellulitis [Wells]
  • L98.4 Non-pressure chronic ulcer of skin, not elsewhere classifiedNon-billable
  • L98.41 Non-pressure chronic ulcer of buttockNon-billable
  • L98.411 Non-pressure chronic ulcer of buttock limited to breakdown of skin
  • L98.412 Non-pressure chronic ulcer of buttock with fat layer exposed
  • L98.413 Non-pressure chronic ulcer of buttock with necrosis of muscle
  • L98.414 Non-pressure chronic ulcer of buttock with necrosis of bone
  • L98.415 Non-pressure chronic ulcer of buttock with muscle involvement without evidence of necrosis
  • L98.416 Non-pressure chronic ulcer of buttock with bone involvement without evidence of necrosis
  • L98.418 Non-pressure chronic ulcer of buttock with other specified severity
  • L98.419 Non-pressure chronic ulcer of buttock with unspecified severity
  • L98.42 Non-pressure chronic ulcer of backNon-billable
  • L98.421 Non-pressure chronic ulcer of back limited to breakdown of skin
  • L98.422 Non-pressure chronic ulcer of back with fat layer exposed
  • L98.423 Non-pressure chronic ulcer of back with necrosis of muscle
  • L98.424 Non-pressure chronic ulcer of back with necrosis of bone
  • L98.425 Non-pressure chronic ulcer of back with muscle involvement without evidence of necrosis
  • L98.426 Non-pressure chronic ulcer of back with bone involvement without evidence of necrosis
  • L98.428 Non-pressure chronic ulcer of back with other specified severity
  • L98.429 Non-pressure chronic ulcer of back with unspecified severity
  • L98.43 Non-pressure chronic ulcer of abdomenNon-billable
  • L98.431 Non-pressure chronic ulcer of abdomen limited to breakdown of skin
  • L98.432 Non-pressure chronic ulcer of abdomen with fat layer exposed
  • L98.433 Non-pressure chronic ulcer of abdomen with necrosis of muscle
  • L98.434 Non-pressure chronic ulcer of abdomen with necrosis of bone
  • L98.435 Non-pressure chronic ulcer of abdomen with muscle involvement without evidence of necrosis
  • L98.436 Non-pressure chronic ulcer of abdomen with bone involvement without evidence of necrosis
  • L98.438 Non-pressure chronic ulcer of abdomen with other specified severity
  • L98.439 Non-pressure chronic ulcer of abdomen with unspecified severity
  • L98.44 Non-pressure chronic ulcer of chestNon-billable
  • L98.441 Non-pressure chronic ulcer of chest limited to breakdown of skin
  • L98.442 Non-pressure chronic ulcer of chest with fat layer exposed
  • L98.443 Non-pressure chronic ulcer of chest with necrosis of muscle
  • L98.444 Non-pressure chronic ulcer of chest with necrosis of bone
  • L98.445 Non-pressure chronic ulcer of chest with muscle involvement without evidence of necrosis
  • L98.446 Non-pressure chronic ulcer of chest with bone involvement without evidence of necrosis
  • L98.448 Non-pressure chronic ulcer of chest with other specified severity
  • L98.449 Non-pressure chronic ulcer of chest with unspecified severity
  • L98.45 Non-pressure chronic ulcer of neckNon-billable
  • L98.451 Non-pressure chronic ulcer of neck limited to breakdown of skin
  • L98.452 Non-pressure chronic ulcer of neck with fat layer exposed
  • L98.453 Non-pressure chronic ulcer of neck with necrosis of muscle
  • L98.454 Non-pressure chronic ulcer of neck with necrosis of bone
  • L98.455 Non-pressure chronic ulcer of neck with muscle involvement without evidence of necrosis
  • L98.456 Non-pressure chronic ulcer of neck with bone involvement without evidence of necrosis
  • L98.458 Non-pressure chronic ulcer of neck with other specified severity
  • L98.459 Non-pressure chronic ulcer of neck with unspecified severity
  • L98.46 Non-pressure chronic ulcer of faceNon-billable
  • L98.461 Non-pressure chronic ulcer of face limited to breakdown of skin
  • L98.462 Non-pressure chronic ulcer of face with fat layer exposed
  • L98.463 Non-pressure chronic ulcer of face with necrosis of muscle
  • L98.464 Non-pressure chronic ulcer of face with necrosis of bone
  • L98.465 Non-pressure chronic ulcer of face with muscle involvement without evidence of necrosis
  • L98.466 Non-pressure chronic ulcer of face with bone involvement without evidence of necrosis
  • L98.468 Non-pressure chronic ulcer of face with other specified severity
  • L98.469 Non-pressure chronic ulcer of face with unspecified severity
  • L98.47 Non-pressure chronic ulcer of groinNon-billable
  • L98.471 Non-pressure chronic ulcer of groin limited to breakdown of skin
  • L98.472 Non-pressure chronic ulcer of groin with fat layer exposed
  • L98.473 Non-pressure chronic ulcer of groin with necrosis of muscle
  • L98.474 Non-pressure chronic ulcer of groin with necrosis of bone
  • L98.475 Non-pressure chronic ulcer of groin with muscle involvement without evidence of necrosis
  • L98.476 Non-pressure chronic ulcer of groin with bone involvement without evidence of necrosis
  • L98.478 Non-pressure chronic ulcer of groin with other specified severity
  • L98.479 Non-pressure chronic ulcer of groin with unspecified severity
  • L98.49 Non-pressure chronic ulcer of skin of other sitesNon-billable
  • L98.491 Non-pressure chronic ulcer of skin of other sites limited to breakdown of skin
  • L98.492 Non-pressure chronic ulcer of skin of other sites with fat layer exposed
  • L98.493 Non-pressure chronic ulcer of skin of other sites with necrosis of muscle
  • L98.494 Non-pressure chronic ulcer of skin of other sites with necrosis of bone
  • L98.495 Non-pressure chronic ulcer of skin of other sites with muscle involvement without evidence of necrosis
  • L98.496 Non-pressure chronic ulcer of skin of other sites with bone involvement without evidence of necrosis
  • L98.498 Non-pressure chronic ulcer of skin of other sites with other specified severity
  • L98.499 Non-pressure chronic ulcer of skin of other sites with unspecified severity
  • L98.5 Mucinosis of the skin
  • L98.6 Other infiltrative disorders of the skin and subcutaneous tissue
  • L98.7 Excessive and redundant skin and subcutaneous tissue
  • L98.8 Other specified disorders of the skin and subcutaneous tissue
  • L98.9 Disorder of the skin and subcutaneous tissue, unspecified
  • L98.A Non-pressure chronic ulcer of upper limb, not elsewhere classifiedNon-billable
  • L98.A1 Non-pressure chronic ulcer of upper armNon-billable
  • L98.A11 Non-pressure chronic ulcer of right upper armNon-billable
  • L98.A111 Non-pressure chronic ulcer of right upper arm limited to breakdown of skin
  • L98.A112 Non-pressure chronic ulcer of right upper arm with fat layer exposed
  • L98.A113 Non-pressure chronic ulcer of right upper arm with necrosis of muscle
  • L98.A114 Non-pressure chronic ulcer of right upper arm with necrosis of bone
  • L98.A115 Non-pressure chronic ulcer of right upper arm with muscle involvement without evidence of necrosis
  • L98.A116 Non-pressure chronic ulcer of right upper arm with bone involvement without evidence of necrosis
  • L98.A118 Non-pressure chronic ulcer of right upper arm with other specified severity
  • L98.A119 Non-pressure chronic ulcer of right upper arm with unspecified severity
  • L98.A12 Non-pressure chronic ulcer of left upper armNon-billable
  • L98.A121 Non-pressure chronic ulcer of left upper arm limited to breakdown of skin
  • L98.A122 Non-pressure chronic ulcer of left upper arm with fat layer exposed
  • L98.A123 Non-pressure chronic ulcer of left upper arm with necrosis of muscle
  • L98.A124 Non-pressure chronic ulcer of left upper arm with necrosis of bone
  • L98.A125 Non-pressure chronic ulcer of left upper arm with muscle involvement without evidence of necrosis
  • L98.A126 Non-pressure chronic ulcer of left upper arm with bone involvement without evidence of necrosis
  • L98.A128 Non-pressure chronic ulcer of left upper arm with other specified severity
  • L98.A129 Non-pressure chronic ulcer of left upper arm with unspecified severity
  • L98.A19 Non-pressure chronic ulcer of unspecified upper armNon-billable
  • L98.A191 Non-pressure chronic ulcer of unspecified upper arm limited to breakdown of skin
  • L98.A192 Non-pressure chronic ulcer of unspecified upper arm with fat layer exposed
  • L98.A193 Non-pressure chronic ulcer of unspecified upper arm with necrosis of muscle
  • L98.A194 Non-pressure chronic ulcer of unspecified upper arm with necrosis of bone
  • L98.A195 Non-pressure chronic ulcer of unspecified upper arm with muscle involvement without evidence of necrosis
  • L98.A196 Non-pressure chronic ulcer of unspecified upper arm with bone involvement without evidence of necrosis
  • L98.A198 Non-pressure chronic ulcer of unspecified upper arm with other specified severity
  • L98.A199 Non-pressure chronic ulcer of unspecified upper arm with unspecified severity
  • L98.A2 Non-pressure chronic ulcer of forearmNon-billable
  • L98.A21 Non-pressure chronic ulcer of right forearmNon-billable
  • L98.A211 Non-pressure chronic ulcer of right forearm limited to breakdown of skin
  • L98.A212 Non-pressure chronic ulcer of right forearm with fat layer exposed
  • L98.A213 Non-pressure chronic ulcer of right forearm with necrosis of muscle
  • L98.A214 Non-pressure chronic ulcer of right forearm with necrosis of bone
  • L98.A215 Non-pressure chronic ulcer of right forearm with muscle involvement without evidence of necrosis
  • L98.A216 Non-pressure chronic ulcer of right forearm with bone involvement without evidence of necrosis
  • L98.A218 Non-pressure chronic ulcer of right forearm with other specified severity
  • L98.A219 Non-pressure chronic ulcer of right forearm with unspecified severity
  • L98.A22 Non-pressure chronic ulcer of left forearmNon-billable
  • L98.A221 Non-pressure chronic ulcer of left forearm limited to breakdown of skin
  • L98.A222 Non-pressure chronic ulcer of left forearm with fat layer exposed
  • L98.A223 Non-pressure chronic ulcer of left forearm with necrosis of muscle
  • L98.A224 Non-pressure chronic ulcer of left forearm with necrosis of bone
  • L98.A225 Non-pressure chronic ulcer of left forearm with muscle involvement without evidence of necrosis
  • L98.A226 Non-pressure chronic ulcer of left forearm with bone involvement without evidence of necrosis
  • L98.A228 Non-pressure chronic ulcer of left forearm with other specified severity
  • L98.A229 Non-pressure chronic ulcer of left forearm with unspecified severity
  • L98.A29 Non-pressure chronic ulcer of unspecified forearmNon-billable
  • L98.A291 Non-pressure chronic ulcer of unspecified forearm limited to breakdown of skin
  • L98.A292 Non-pressure chronic ulcer of unspecified forearm with fat layer exposed
  • L98.A293 Non-pressure chronic ulcer of unspecified forearm with necrosis of muscle
  • L98.A294 Non-pressure chronic ulcer of unspecified forearm with necrosis of bone
  • L98.A295 Non-pressure chronic ulcer of unspecified forearm with muscle involvement without evidence of necrosis
  • L98.A296 Non-pressure chronic ulcer of unspecified forearm with bone involvement without evidence of necrosis
  • L98.A298 Non-pressure chronic ulcer of unspecified forearm with other specified severity
  • L98.A299 Non-pressure chronic ulcer of unspecified forearm with unspecified severity
  • L98.A3 Non-pressure chronic ulcer of handNon-billable
  • L98.A31 Non-pressure chronic ulcer of right handNon-billable
  • L98.A311 Non-pressure chronic ulcer of right hand limited to breakdown of skin
  • L98.A312 Non-pressure chronic ulcer of right hand with fat layer exposed
  • L98.A313 Non-pressure chronic ulcer of right hand with necrosis of muscle
  • L98.A314 Non-pressure chronic ulcer of right hand with necrosis of bone
  • L98.A315 Non-pressure chronic ulcer of right hand with muscle involvement without evidence of necrosis
  • L98.A316 Non-pressure chronic ulcer of right hand with bone involvement without evidence of necrosis
  • L98.A318 Non-pressure chronic ulcer of right hand with other specified severity
  • L98.A319 Non-pressure chronic ulcer of right hand with unspecified severity
  • L98.A32 Non-pressure chronic ulcer of left handNon-billable
  • L98.A321 Non-pressure chronic ulcer of left hand limited to breakdown of skin
  • L98.A322 Non-pressure chronic ulcer of left hand with fat layer exposed
  • L98.A323 Non-pressure chronic ulcer of left hand with necrosis of muscle
  • L98.A324 Non-pressure chronic ulcer of left hand with necrosis of bone
  • L98.A325 Non-pressure chronic ulcer of left hand with muscle involvement without evidence of necrosis
  • L98.A326 Non-pressure chronic ulcer of left hand with bone involvement without evidence of necrosis
  • L98.A328 Non-pressure chronic ulcer of left hand with other specified severity
  • L98.A329 Non-pressure chronic ulcer of left hand with unspecified severity
  • L98.A39 Non-pressure chronic ulcer of unspecified handNon-billable
  • L98.A391 Non-pressure chronic ulcer of unspecified hand limited to breakdown of skin
  • L98.A392 Non-pressure chronic ulcer of unspecified hand with fat layer exposed
  • L98.A393 Non-pressure chronic ulcer of unspecified hand with necrosis of muscle
  • L98.A394 Non-pressure chronic ulcer of unspecified hand with necrosis of bone
  • L98.A395 Non-pressure chronic ulcer of unspecified hand with muscle involvement without evidence of necrosis
  • L98.A396 Non-pressure chronic ulcer of unspecified hand with bone involvement without evidence of necrosis
  • L98.A398 Non-pressure chronic ulcer of unspecified hand with other specified severity
  • L98.A399 Non-pressure chronic ulcer of unspecified hand with unspecified severity

Clinical Terms in This Code Range

Definitions from the National Library of Medicine for conditions coded in the L98 range.

Fistula

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

Granuloma, Pyogenic

A disorder of the skin, the oral mucosa, and the gingiva, that usually presents as a solitary polypoid capillary hemangioma often resulting from trauma. It is manifested as an inflammatory response with similar characteristics to those of a granuloma.

Mucinoses

Mucoid states characterized by the elevated deposition and accumulation of mucin (mucopolysaccharides) in dermal tissue. The fibroblasts are responsible for the production of acid mucopolysaccharides (GLYCOSAMINOGLYCANS) in the ground substance of the connective tissue system. When fibroblasts produce abnormally large quantities of mucopolysaccharides as hyaluronic acid, chondroitin sulfate, or heparin, they accumulate in large amounts in the dermis.

Pseudolymphoma

A group of disorders having a benign course but exhibiting clinical and histological features suggestive of malignant lymphoma. Pseudolymphoma is characterized by a benign infiltration of lymphoid cells or histiocytes which microscopically resembles a malignant lymphoma. (From Dorland, 28th ed & Stedman, 26th ed)

Scleromyxedema

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.

Skin Diseases

Diseases involving the DERMIS or EPIDERMIS.

About the L98 Code Range

These conditions affect the skin or the tissue beneath it. They include long-lasting skin sores not caused by pressure.

The codes separate named disorders, excess skin and tissue, and sores by body site. L98.4 groups sores on sites such as the buttock, back, face and groin. L98.A groups sores on the upper arm, forearm and hand. Other subdivisions identify excessive or redundant skin and tissue, other specified disorders, or an unspecified disorder.

Questions About This Page

How many billable codes are in the L98 range?

Of the 168 codes in this range, 145 are billable and valid for claim submission from October 1, 2026 through September 30, 2027. Category header codes group them but cannot be reported on claims.

What does the L98 range classify?

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.

Related References

All ICD-10-CM ChaptersAll of Chapter 12ICD-10-CM Code LookupMS-DRG ReferenceMedicare Code EditsPOA Exempt Codes

Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.