ICD-10 Code for Enlargement

The ICD-10-CM 2027 alphabetic index lists enlargement, enlarged with the subterms below. More specific codes depend on the details documented, as listed in the official index (22 codes, 20 billable).

Index entries for Enlargement

adenoids – J35.2
- with tonsils – J35.3
alveolar ridge – K08.89
- congenital – see Anomaly, alveolar
apertures of diaphragm (congenital) – Q79.1
gingival – K06.1
heart, cardiac – see Hypertrophy, cardiac
labium majus, childhood asymmetric (CALME) – N90.61
lacrimal gland, chronic – H04.03- (header)
liver – see Hypertrophy, liver
lymph gland or node – R59.9
- generalized – R59.1
- localized – R59.0
orbit – H05.34- (header)
organ or site, congenital NEC – see Anomaly, by site
parathyroid (gland) – E21.0
pituitary fossa – R93.0
prostate – N40.0
- with lower urinary tract symptoms (LUTS) – N40.1
  - nodular – N40.3
- nodular – N40.2
  - with lower urinary tract symptoms (LUTS) – N40.3
- without lower urinary tract symptoms (LUTS) – N40.0
  - nodular – N40.2
sella turcica – R93.0
spleen – see Splenomegaly
thymus (gland) (congenital) – E32.0
thyroid (gland) – see Goiter
tongue – K14.8
tonsils – J35.1
- with adenoids – J35.3
uterus – N85.2
vestibular aqueduct – Q16.5

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.