2026 ICD-10-CM Diagnosis Code L88Pyoderma gangrenosum
ICD-10-CM Codes›L00–L99›L80-L99›L88
- Billable — Valid for Submission
- Not Chronic
L88 is a billable ICD-10-CM diagnosis code for pyoderma gangrenosum. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 602 through 603. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Ankylosing spondylitis
- Bullous pyoderma gangrenosum
- Cystic acne
- Hidradenitis suppurativa pyoderma gangrenosum complex
- PAPASH syndrome
- Parastomal pyoderma gangrenosum
- PASS syndrome
- Peristomal dermatitis
- Peristomal skin complication
- PsAPASH syndrome
- Psoriatic arthritis
- Pustular pyoderma gangrenosum
- Pyoderma gangrenosum
- Pyoderma gangrenosum due to hematological disorder
- Pyoderma gangrenosum due to inflammatory bowel disease
- Pyoderma gangrenosum due to inflammatory polyarthropathy
- Pyoderma gangrenosum, acne, suppurative hidradenitis syndrome
- Pyogenic arthritis, pyoderma gangrenosum, acne syndrome
- Superficial vegetating pyoderma gangrenosum
- Ulcerative pyoderma gangrenosum
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Phagedenic pyoderma
Type 1 Excludes
- dermatitis gangrenosa L08.0
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Phagedena (dry) (moist) (sloughing) - See Also: Gangrene;
- geometric - L88
- gangrenosum - L88
- phagedenic - L88
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Phagedena(dry) (moist) (sloughing)
- geometric
- Pyoderma, pyodermia
- gangrenosum
- Pyoderma, pyodermia
- phagedenic
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Pyoderma Gangrenosum
an idiopathic, rapidly evolving, and severely debilitating disease occurring most commonly in association with chronic ulcerative colitis. it is characterized by the presence of boggy, purplish ulcers with undermined borders, appearing mostly on the legs. the majority of cases are in people between 40 and 60 years old. its etiology is unknown.Hidradenitis Suppurativa
a chronic, suppurative inflammation of the apocrine sweat glands, that is characterized by clusters of bumps or sores.
Patient EducationClinical
Skin Conditions
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:
The full article covers:
- What does your skin do?
- What problems and conditions can affect your skin?
- How can I keep my skin healthy?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L88 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L88Overview
Is L88 (Pyoderma gangrenosum) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report pyoderma gangrenosum on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does L88 group to?
When pyoderma gangrenosum is the principal diagnosis on an inpatient stay, it groups to MS-DRG 602, 603, with relative weights from 0.8709 to 1.4213 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of L88?
Under the General Equivalence Mappings, pyoderma gangrenosum converts to ICD-9-CM 686.01 (pyoderma gangrenosum). The mapping is a direct match.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
