M45Non-billable
Ankylosing spondylitis
Chapter 13: Diseases of the musculoskeletal system and connective tissue
Inclusion Terms
1 item
Inclusion Terms
- •Rheumatoid arthritis of spine
Excludes2
1 item
Excludes2
- •Behçet's disease (M35.2)
Coding Guidance
M45 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail. See Related Codes to drill down to more specific billable codes for appropriate reimbursement.
Referenced in Diagnoses
Conditions that use this ICD-10 code in their documentation
View documentation for human leukocyte antigen positive
human leukocyte antigen positive
View TemplatesHLA-B27 Positive
View documentation for spondyloarthropathy
spondyloarthropathy
View TemplatesSpondyloarthropathy
Additional Information from Parent Codes
The following information may apply to this code from its parent codes in the ICD-10 hierarchy. This information is important for proper coding and classification.
Parent Codes Referenced:
Excludes2
10 items
Excludes2
From M00-M99:
- •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-)
- •
- •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)
Notes
1 item
Notes
From M00-M99:
- •Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition