ICD-10 Code for Complex

The ICD-10-CM 2027 alphabetic index lists complex with the subterms below. More specific codes depend on the details documented, as listed in the official index (17 codes, 17 billable).

Index entries for Complex

Addison-Schilder – E71.528
cardiorenal – see Hypertension, cardiorenal
Costen's – M26.69
disseminated mycobacterium avium- intracellulare (DMAC) – A31.2
Eisenmenger's (ventricular septal defect) – I27.83
hypersexual – F52.8
jumped process, spine – see Dislocation, vertebra
primary, tuberculous – A15.7
Schilder-Addison – E71.528
subluxation (vertebral) – M99.19
- abdomen – M99.19
- acromioclavicular – M99.17
- cervical region – M99.11
- cervicothoracic – M99.11
- costochondral – M99.18
- costovertebral – M99.18
- head region – M99.10
- hip – M99.15
- lower extremity – M99.16
- lumbar region – M99.13
- lumbosacral – M99.13
- occipitocervical – M99.10
- pelvic region – M99.15
- pubic – M99.15
- rib cage – M99.18
- sacral region – M99.14
- sacrococcygeal – M99.14
- sacroiliac – M99.14
- specified NEC – M99.19
- sternochondral – M99.18
- sternoclavicular – M99.17
- thoracic region – M99.12
- thoracolumbar – M99.12
- upper extremity – M99.17
Taussig-Bing (transposition, aorta and overriding pulmonary artery) – Q20.1

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.