ICD-10-CM Code For Papulosquamous Disorders In Diseases Classified Elsewhere: Group Overview

The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group L45 includes papulosquamous skin disorders that are manifestations of other classified diseases, covering scaly papules and plaques linked to systemic or specified conditions. These ICD-10-CM diagnosis codes are used to document skin involvement related to underlying diagnoses, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM L45 group supports proper claim adjudication.

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ICD-10-CM L45: Papulosquamous Disorders In Diseases Classified Elsewhere Overview

The diagnoses in this group represent papulosquamous skin eruptions that occur as manifestations of underlying systemic or classified diseases rather than primary dermatologic conditions. These codes target skin findings such as scaly papules and plaques associated with other disease classifications and involve the integumentary system. Accurate coding matters for documenting comorbidity, supporting appropriate claim adjudication, and reflecting clinical complexity relevant to reimbursement.

When to Use

Use a code from this group when a papulosquamous skin finding is documented as part of another primary disease and not as a standalone dermatologic diagnosis. These codes apply when clinical documentation links the skin manifestation explicitly to the underlying classified condition.

ICD-10-CM Codes

1 rows

ICD-10-CM Code	Description
L45	Papulosquamous disorders in diseases classified elsewhere

DRG Codes

2 rows

DRG Code	Description
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC

Typical Clinical Scenarios

A middle-aged patient presents to dermatology with new-onset pruritic, erythematous papules and scaling localized to the flexural surfaces and trunk over several weeks; biopsy and clinical exam suggest a papulosquamous eruption associated with an underlying systemic disease process, prompting assignment of a diagnosis from this papulosquamous disorders in diseases classified elsewhere group. Typical codes: L45.
An outpatient follow-up for a patient with a chronic autoimmune disorder who develops recurrent, well-demarcated scaly papules at sites distant from primary disease activity; the clinician documents that the cutaneous lesions represent papulosquamous skin involvement of the underlying systemic condition, leading to use of a code from this group to capture the skin manifestation. Typical codes: L45.
An urgent visit for rapidly spreading, inflamed scaly papules with secondary excoriation and superimposed infection in a patient with known systemic disease; the presenting complication involves papulosquamous skin changes significant enough to be coded separately as a manifestation of the systemic illness. Typical codes: L45.

Related Codes

L40-PSORIASIS

ICD-10-CM Code For Psoriasis: Group Overview

L41-PARAPSORIASIS

ICD-10-CM Code For Parapsoriasis: Group Overview

L42-PITYRIASIS-ROSEA

ICD-10-CM Code For Pityriasis Rosea: Group Overview

L43-LICHEN-PLANUS

ICD-10-CM Code For Lichen Planus: Group Overview

L44-OTHER-PAPULOSQUAMOUS-DISORDERS

ICD-10-CM Code For Other Papulosquamous Disorders: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

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When to Use

ICD-10-CM Codes

1 rows

ICD-10-CM Code	Description
L45	Papulosquamous disorders in diseases classified elsewhere

DRG Codes

2 rows

DRG Code	Description
606	Minor Skin Disorders with MCC
607	Minor Skin Disorders without MCC

Typical Clinical Scenarios

A middle-aged patient presents to dermatology with new-onset pruritic, erythematous papules and scaling localized to the flexural surfaces and trunk over several weeks; biopsy and clinical exam suggest a papulosquamous eruption associated with an underlying systemic disease process, prompting assignment of a diagnosis from this papulosquamous disorders in diseases classified elsewhere group. Typical codes: L45.
An outpatient follow-up for a patient with a chronic autoimmune disorder who develops recurrent, well-demarcated scaly papules at sites distant from primary disease activity; the clinician documents that the cutaneous lesions represent papulosquamous skin involvement of the underlying systemic condition, leading to use of a code from this group to capture the skin manifestation. Typical codes: L45.
An urgent visit for rapidly spreading, inflamed scaly papules with secondary excoriation and superimposed infection in a patient with known systemic disease; the presenting complication involves papulosquamous skin changes significant enough to be coded separately as a manifestation of the systemic illness. Typical codes: L45.

Related Codes

L40-PSORIASIS

ICD-10-CM Code For Psoriasis: Group Overview

L41-PARAPSORIASIS

ICD-10-CM Code For Parapsoriasis: Group Overview

L42-PITYRIASIS-ROSEA

ICD-10-CM Code For Pityriasis Rosea: Group Overview

L43-LICHEN-PLANUS

ICD-10-CM Code For Lichen Planus: Group Overview

L44-OTHER-PAPULOSQUAMOUS-DISORDERS

ICD-10-CM Code For Other Papulosquamous Disorders: Group Overview

Frequently Asked Questions

References

1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.

Published by

Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

ICD-10-CM Code For Papulosquamous Disorders In Diseases Classified Elsewhere: Group Overview

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ICD-10-CM L45: Papulosquamous Disorders In Diseases Classified Elsewhere Overview

ICD-10-CM Code For Papulosquamous Disorders In Diseases Classified Elsewhere: Group Overview

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ICD-10-CM L45: Papulosquamous Disorders In Diseases Classified Elsewhere Overview

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

What does ICD-10-CM group `L45` represent?

How is coding within `L45` important for reimbursement?

Which clinical features are captured by `L45` codes?

How do `L45` codes relate to DRG grouping?

When should a coder choose a `L45` code instead of a primary dermatology code?

References

When to Use

ICD-10-CM Codes

DRG Codes

Typical Clinical Scenarios

Related Codes

What does ICD-10-CM group `L45` represent?

How is coding within `L45` important for reimbursement?

Which clinical features are captured by `L45` codes?

How do `L45` codes relate to DRG grouping?

When should a coder choose a `L45` code instead of a primary dermatology code?

References