M40

Non-Billable

ChapterM00–M99

Rankcategory

Official Description

Kyphosis and lordosis

Use a more specific code (0 billable, 6 non-billable)

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 13: Diseases of the Musculoskeletal System and Connective Tissue (M00-M99).

Excludes2(Not included here. Code separately if applicable.)

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)

Excludes1(Not coded here. Use a different code.)

Code First

BillableHas subcodes

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

M40-M43Deforming dorsopathies (M40-M43)

M40Kyphosis and lordosisNot billable

M40.0Postural kyphosisSubcodes

M40.1Other secondary kyphosisSubcodes

M40.2Other and unspecified kyphosisSubcodes

M40.3Flatback syndromeSubcodes

M40.4Postural lordosisSubcodes

M40.5Lordosis, unspecifiedSubcodes

The following parent sections contain instructions or notes that apply to M40:

chapterCH13

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

2026

No direct MS-DRG triggers identified.

Find surgical and procedural codes related to Kyphosis and lordosis.