ICDcodes.org
FY2027

L98.5 — Mucinosis of the skin

Billable

Is L98.5 billable?

Yes — L98.5 is billable for FY2027. L98.5 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. L98.5 may be submitted for encounters from October 1, 2026 through September 30, 2027.

L98.5 at a glance

CodeL98.5
DescriptionMucinosis of the skin
BillableYes
Code setICD-10-CM FY2027
Valid for encountersOctober 1, 2026 – September 30, 2027

Which MS-DRGs does L98.5 group to?

L98.5 sits in MDC 09 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

  • 606Minor Skin Disorders with MCCmedical
  • 607Minor Skin Disorders without MCCmedical

How is L98.5 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to L98.5. They show the wording a clinician may have documented, which often differs from the Tabular description.

  • Mucinosis (cutaneous) (focal) (papular) (reticular erythematous) (skin)
  • Reticular erythematous mucinosis
  • Scleromyxedema
  • Lichen › myxedematosus
  • Myxedema › cutis (adult) (idiocy) (infantile) (juvenile)
  • Myxedema › papular (adult) (idiocy) (infantile) (juvenile)

Excludes1 — never code together

The conditions below can never be reported together with L98.5 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

Inclusion terms

Alternative wording in documentation that is classified to L98.5.

  • Focal mucinosis
  • Lichen myxedematosus
  • Reticular erythematous mucinosis

Excludes2 — not included here — inherited from Chapter 12

The conditions below are not part of L98.5, but a patient may have both at the same time. When documentation supports it, L98.5 and the excluded code may both 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.-)

How long has L98.5 existed?

L98.5 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with L98.5?

ICD-10-CM declares these codes mutually exclusive with L98.5 — exactly one of each pair can be correct for a given encounter.

Which conditions are coded to L98.5?

What other codes are in the L98 family? (10)