M32.13 — Lung involvement in systemic lupus erythematosus

Billable

Is M32.13 billable?

Yes — M32.13 is billable for FY2027. M32.13 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M32.13 may be submitted for encounters from October 1, 2026 through September 30, 2027.

M32.13 at a glance

Code	M32.13
Description	Lung involvement in systemic lupus erythematosus
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does M32.13 group to?

M32.13 sits in MDC 08 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

545Connective Tissue Disorders with MCCmedical
546Connective Tissue Disorders with CCmedical
547Connective Tissue Disorders without CC/MCCmedical

How is M32.13 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to M32.13. They show the wording a clinician may have documented, which often differs from the Tabular description.

Effusion › pleura, pleurisy, pleuritic, pleuropericardial › due to systemic lupus erythematosis
Disease, diseased › lung › in › systemic › lupus erythematosus
Lupus › erythematosus › systemic › with organ or system involvement › lung

Inclusion terms

Alternative wording in documentation that is classified to M32.13.

Pleural effusion due to systemic lupus erythematosus

Excludes1 — never code together — inherited from M30-M36

The conditions below can never be reported together with M32.13 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

autoimmune disease, single organ or single cell-type -code to relevant condition category

Excludes1 — never code together — inherited from M32

The conditions below can never be reported together with M32.13 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

lupus erythematosus (discoid) (NOS) (L93.0)

Excludes2 — not included here — inherited from Chapter 13

The conditions below are not part of M32.13, but a patient may have both at the same time. When documentation supports it, M32.13 and the excluded code may both be reported.

arthropathic psoriasis (L40.5-)
certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
compartment syndrome (traumatic) (T79.A-)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

How long has M32.13 existed?

M32.13 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.