ICD-10-CM Diagnosis Code L98.9 - Disorder of the skin and subcutaneous tissue, unspecified (original) (raw)

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ICD List 2025-2026 Edition

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Disorder of the skin and subcutaneous tissue, unspecified

ICD-10-CM Code:

L98.9

ICD-10 Code for:

Disorder of the skin and subcutaneous tissue, unspecified

Is Billable?

Yes - Valid for Submission

Chronic Condition Indicator: [1]

Not chronic

Code Navigator:

L98.9 is a billable diagnosis code used to specify a medical diagnosis of disorder of the skin and subcutaneous tissue, unspecified. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2025 through September 30, 2026.

Unspecified diagnosis codes like L98.9 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.

  1. Code Information
  2. Approximate Synonyms
  3. Clinical Classification
  4. Clinical Information
  5. Tabular List of Diseases and Injuries
  6. Index to Diseases and Injuries References
  8. Diagnostic Related Groups Mapping
  9. Convert to ICD-9 Code
  10. Patient Education
  11. Other Codes Used Similar Conditions
  12. Code History

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

CCSR Code: SKN007

Inpatient Default: Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.

Outpatient Default: Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

folliculin protein (579 aa, ~64 kda) is encoded by the human flcn gene. this protein is purported to play a role in tumor suppresion, but an exact function has yet to be identified. mutations and truncations in the protein have been implicated in the pathogenesis of fibrofolliculoma formation, birt-hogg-dube syndrome, and colorectal tumorigenesis.

a pathologic process that affects the skin and is confined to a specific area.

a localized pathological or traumatic structural change, damage, deformity, or discontinuity of skin.

a surgical procedure to remove a skin lesion and a margin around the area.

a skin lesion that measures between 15 and 200 mm in greatest dimension.

a skin lesion that measures less than 15 mm in greatest dimension.

a skin lesion that measures more than 200 mm in greatest dimension.

a pathologic process that arises from the skin and has the potential to evolve into a malignant neoplasm. representative examples include actinic keratosis and dysplastic nevus.

the presence of skin lesions that are large and vary in size.

References found for this diagnosis code in the External Cause of Injuries Index:

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

ICD-9-CM: 709.9

Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.

Skin Conditions

What does your skin do?

Your skin is your body's largest organ. It covers the entire outside of your body. There are many ways that your skin protects your body and helps keep you healthy. For example, it:

What problems and conditions can affect your skin?

There are many different problems and conditions which can affect your skin. Some of them can cause uncomfortable symptoms, such as itching, burning, redness, and rashes. They might also affect your appearance. Some of the more common skin conditions include:

How can I keep my skin healthy?

Since your skin protects your body in many ways, it's important to try to keep your skin healthy. For example, you can:

NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

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