M88

Non-Billable

ChapterM00–M99

Rankcategory

Official Description

Osteitis deformans [Paget's disease of bone]

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

CH13 Parent Instructions

Excludes2(Not included here)

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)

M86-M90 Parent Instructions

Excludes1(Not coded here)

postprocedural osteopathies (M96.-)

Instructional Notes

Excludes1(Not coded here)

osteitis deformans in neoplastic disease (M90.6)

Clinical Hierarchy

CH13Diseases of the musculoskeletal system and connective tissue (M00-M99)

M86-M90Other osteopathies (M86-M90)

M88Osteitis deformans [Paget's disease of bone]

M88.0Osteitis deformans of skull

M88.1Osteitis deformans of vertebrae

M88.8Osteitis deformans of other bones

M88.9Osteitis deformans of unspecified bone

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to M88:

blockM86-M90

Other osteopathies (M86-M90)

View context instructions

chapterCH13

Diseases of the musculoskeletal system and connective tissue (M00-M99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to M88. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

25 raw paths

Curvature1 unique routes

spine (acquired) (angular) (idiopathic) (incorrect) (postural)

due to or associated with

osteitis

deformans→M88

Osteitis3 unique routes

deformans→M88(3 variants)

skull→M88

vertebra→M88

Paget's disease21 unique routes

bone→M88(21 variants)