2027 ICD-10-CM Diagnosis Code L73.2Hidradenitis suppurativa
ICD-10-CM Codes›L00–L99›L60-L75›L73
- Billable — Valid for Submission
- Chronic Condition
L73.2 is a billable ICD-10-CM diagnosis code for hidradenitis suppurativa. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) and groups to MS-DRG 606 through 607. 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
- Anogenital hidradenitis suppurativa
- Axillary hidradenitis suppurativa
- Dermatosis due to cytotoxic therapy
- Follicular occlusion tetrad - hidradenitis, acne conglobata, dissecting cellulitis, pilonidal sinus
- Follicular occlusion triad - hidradenitis, acne conglobata, dissecting cellulitis of scalp
- Hidradenitis
- Hidradenitis suppurativa
- Hidradenitis suppurativa of anus
- Hidradenitis suppurativa of multiple sites
- Hidradenitis suppurativa of vulva
- Hidradenitis suppurativa pyoderma gangrenosum complex
- Infective dermatosis of female genitalia
- Neutrophilic eccrine hidradenitis
- Neutrophilic eccrine hidradenitis due to cytotoxic therapy
- PAPASH syndrome
- PASS syndrome
- Perianal dermatitis
- PsAPASH syndrome
- Psoriatic arthritis
- Pyoderma gangrenosum, acne, suppurative hidradenitis syndrome
- Retro-auricular cysts
Instructional NotesGuidance
Instructions from the official ICD-10-CM Tabular List that apply to L73.2: its own notes plus those printed at block L60-L75 and Chapter 12. A note printed at a category, block or chapter applies to every code under it.
Excludes1
Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.
- congenital malformations of integument (Q84.-)
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 L73.2, its category, or a range that includes it.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Disease, diseased See Also: Syndrome;
Pollitzer's disease L73.2
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Hidradenitis Suppurativa
a chronic suppurative and cicatricial disease of the apocrine glands occurring chiefly in the axillae in women and in the groin and anal regions in men. it is characterized by poral occlusion with secondary bacterial infection, evolving into abscesses which eventually rupture. as the disease becomes chronic, ulcers appear, sinus tracts enlarge, fistulas develop, and fibrosis and scarring become evident.
Patient EducationClinical
Hidradenitis Suppurativa
Hidradenitis suppurativa (HS) is a chronic skin disease. Another name for it is acne inversa. It causes painful, boil-like lumps that form under the skin. It often affects areas where the skin rubs together, such as your armpits and groin. The lumps become inflamed and painful.
The full article covers:
- What is hidradenitis suppurativa (HS)?
- What causes hidradenitis suppurativa (HS)?
- Who is more likely to get hidradenitis suppurativa (HS)?
- What are the symptoms of hidradenitis suppurativa (HS)?
- How is hidradenitis suppurativa (HS) diagnosed?
- What are the treatments for hidradenitis suppurativa?
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert L73.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About L73.2Overview
What is the ICD-10 code for hidradenitis suppurativa?
The ICD-10-CM code for hidradenitis suppurativa is L73.2 (sometimes written as L732). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
Is L73.2 (Other follicular disorders) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report hidradenitis suppurativa on HIPAA-covered claims from October 1, 2026 through September 30, 2027.
What MS-DRG does L73.2 group to?
When hidradenitis suppurativa is the principal diagnosis on an inpatient stay, it groups to MS-DRG 607, 606, with relative weights from 0.8772 to 1.5721 depending on complications. Higher weights mean higher Medicare reimbursement.
Can L73.2 be reported with a code from Q84?
Not as a rule. The Excludes1 note at block L60-L75, which applies to L73.2, lists "congenital malformations of integument (Q84.-)". 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 is the ICD-9 equivalent of L73.2?
Under the General Equivalence Mappings, hidradenitis suppurativa converts to ICD-9-CM 705.83 (hidradenitis). The mapping is a direct match.
