2027 ICD-10-CM Diagnosis Code L88Pyoderma gangrenosum
ICD-10-CM Codes›L00–L99›L80-L99›L88
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Risk Adjusts — HCC 387
- Not Chronic
L88 is a billable ICD-10-CM diagnosis code for pyoderma gangrenosum. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 602 through 603. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 3 closely related codes. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified inflammatory condition of skin.
For Medicare Advantage risk adjustment, L88 maps to CMS-HCC Category 387 (Pemphigus, Pemphigoid, and Other Specified Autoimmune Skin Disorders) under the V28 model, adding a risk factor of about 0.406 for a community, non-dual, aged beneficiary in payment year 2027.
Code Identity
Code Classification
Medicare Risk Adjustment (HCC)Billing
L88 maps to a payment category in the CMS-HCC model used to risk-adjust Medicare Advantage payments. Weights are the published community factors for payment year 2027.
Source: CMS Payment Year 2027 risk adjustment mappings and model software. Weights are relative factors, not dollar amounts; a beneficiary's total RAF also includes demographics and interactions. Browse all CMS-HCC categories.
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
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L88: its own notes plus those printed at Chapter 12. A note printed at a category, block or chapter applies to every code under it.
Applicable To
Conditions this code is used for: synonyms of the title or, for "other specified" codes, the conditions assigned to it. The list is not exhaustive.
- Phagedenic pyoderma
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- dermatitis gangrenosa (L08.0)
Excludes2
Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- lipomelanotic reticulosis (I89.8)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- viral warts (B07.-)
Source: CMS ICD-10-CM Tabular List. How to read instructional notes.
Referenced in Other NotesGuidance
Instructional notes printed at other codes that name L88, its category, or a range that includes it.
Excludes1 3
These codes carry an Excludes1 note naming L88: they are not reported together with it, unless the two conditions are unrelated.
Use Additional Code 2
These codes say to use an additional code from the note, and L88 is one of the codes named.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Phagedena (dry) (moist) (sloughing) See Also: Gangrene;
geometric L88
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.
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
What is the ICD-10 code for pyoderma gangrenosum?
The ICD-10-CM code for pyoderma gangrenosum is L88. It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
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, 2026 through September 30, 2027.
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 0.8633 to 1.4272 depending on complications. Higher weights mean higher Medicare reimbursement.
Is L88 a CC or MCC?
CMS lists L88 as a CC (complication or comorbidity) for FY 2027. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 3 closely related codes in its exclusion list.
Can L88 be reported with L08.0?
Not as a rule. The Excludes1 note on L88 lists "dermatitis gangrenosa (L08.0)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).
What HCC is L88?
L88 (pyoderma gangrenosum) maps to CMS-HCC Category 387 (Pemphigus, Pemphigoid, and Other Specified Autoimmune Skin Disorders), commonly written as HCC 387, in the CMS-HCC V28 model used for Medicare Advantage risk adjustment in payment year 2027. In the Part D prescription drug model it maps to RxHCC 314.
Does L88 risk-adjust for Medicare Advantage payment?
Yes. When documented and reported on a Medicare Advantage encounter, L88 adds a risk adjustment factor of about 0.406 to the beneficiary's RAF score for a community, non-dual, aged enrollee (published V28 weights range from 0.125 to 0.658 depending on the payment segment). HCC 387 sits at the top of its hierarchy, so no other condition category supersedes it. See the full factor table on the HCC 387 category page.
