2021 ICD-10 updates are already upon us and October 1, 2020 will be here before you know it. The Centers for Medicare and Medicaid Services (CMS) released the 2021 ICD-10-CM code descriptions, tables and index, and addendum on July 1, 2020. 

Within the 2021 code set, there are 490 additions, 58 deletions, and 47 revisions, which increases the code set from 72,184 to 72,616 diagnoses.

Here are some changes you can expect to see in your 2021 ICD-10-CM coding books:

A84.81 Powassan virus disease

A84.89 Other tick-borne viral encephalitis [Louping ill]

D84.81 Immunodeficiency due to condition classified elsewhere

D84.82 Immunodeficiency due to drugs and external causes

D84.821 Immunodeficiency due to drugs

D84.822 Immunodeficiency due to external causes

D84.89 Other immunodeficiencies

E70.81 Aromatic L-amino acid decarboxylase deficiency [AADC deficiency]

E70.89 Other disorders of aromatic amino-acid metabolism

G11.10 Early-onset cerebellar ataxia, unspecified

G11.11 Friedreich ataxia

G11.19 Other early-onset cerebellar ataxia

G40.42 Cyclin-Dependent Kinase-Like 5 Deficiency Disorder [CDKL5]

H55.81 is revised

H55.82 Deficient smooth pursuit eye movements

Several additions, deletions, and revisions were made under M92 Other juvenile osteochondrosis

034.218 Maternal care for other type scar from previous cesarean delivery

034.22 Maternal care for cesarean scar defect (isthmocele)

099.891 Other specified diseases and conditions complicating pregnancy

099.892 Other specified diseases and conditions complicating childbirth

O99.893 Other specified diseases and conditions complicating puerperium

R74.01 Elevation of levels of liver transaminase levels

R74.02 Elevation of levels of lactic acid dehydrogenase [LDH]

Under T40 Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens], the T40.4X codes are deleted and T40.41x, T40.2x, and T40.9x are added.

This is only to name a few of changes you can expect to see for 2021 ICD-10-CM coding.

Join MMI’s 2021 ICD-10-CM Updates Live Webinar with Rhonda Granja on Tuesday, September 29th at 1 pm EST for more information on the 2021 coding changes.